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Four new gobiid fishes of the genus Bryan mops from the East Indies.

Abstract

Four new species of the gobiid fish genus Bganinops are described: B. annella from 19 specimens collected from sea fans of the genus Annella from Bali, Indonesia and Lizard Island, Great Barrier Reef; B. earlei from nine specimens collected from a sea pen and adjacent seagrass in the D'En-trecasteaux Islands, Papua New Guinea; B. tectus from six specimens collected from the gorgonian Ellisella quadrilin-eata at Linnet Reef, Great Barrier Reef; and B. translucens from two specimens commensal on a sponge in the Mentawai Islands off SW Sumatra. Bganinops annella is closely related to B. amplus Larson and B. loki Larson with which it shares a rounded, cup-like, pelvic-fin disc, the same dorsal and anal fin-ray counts, and slender head and body; it differs in having the gill opening extending forward slightly before the posterior margin of the preopercle, longitudinal scale series 34-45, and transverse scale rows 8-10. The three species differ also by a modal count of one in pectoral-ray counts (annella with 14, loki with 15, and tectus with 16). Bryaninops earlei differs from all congeners in having large ctenoid scales (22-25 in longitudinal series); it is similar to B. natans in lacking a canal connecting posterior interorbital pores, but clearly different in having scales extending anteriorly onto the nape. Bganinops tectus is closely related to B. nexus Larson and B. erythrops (Jordan and Seale), with which it shares the absence of anterior and posterior nostrils. It differs from these two species in lacking ctenoid scales below the second dorsal fin, above the anal fin, and on the ventral side of the caudal peduncle. Bganinops translucens is closely related to B. dianneae Larson and B. spongicolus Suzuki, Bogorodsky & Randall, with which it shares an oblong and very flat pelvic disc, instead of rounded and cup-like as in most other species of the genus. It differs also from these two species in having ctenoid scales on the nape and a wide, anteriorly- directed pocket on the pelvic frenum.

Zusammenfassung

Beschrieben werden vier neue Grundelarten der Gattung Bryaninops: B. annella auf der Grundlage von 19 Exem-platen, die von Seerdchern der Gattung Annella vor Bali, Indonesien und Lizard Island, Groges Barriere-Riff, gesam-melt wurden; B. earlei auf der Grundlage von neun Exem-plaren, gesammelt von Seefedern und dem benachbarten Seegras an den D'Entrecasteaux-Inseln, Papua-Neuguinea; B. tectus anhand von sechs Exemplaren, gesammelt von Gorgonien der Art Ellisella quadrilineata auf dem Linnett-Riff, Groges Barriere-Riff; sowie B. translucens auf der Grundlage von zwei auf einem Schwamm zusammen leben-den Exemplaren, die an den Mentawai-Inseln siidwestlich vor Sumatra gesammelt wurden. Bganinops annella ist nahe verwandt mit B. amplus Larson und B. loki Larson--gemeinsame Merkrnale sind die rundliche, schalen-artige Bauchflossenscheibe, dieselben Zahlen bei den Riicken-und Afterflossenstrahlen, schlanker Kopf und Rumpf; Unter-scheidungsmerkmale der neuen Art: die ICiementiffnung erstreckt sich nach vorne etwas fiber den Hinterrand des Praoperculums hinaus, 34-45 Langsschuppenreihen sowie 8-10 Querschuppenreihen. Drei Arten lassen sich augerdem nach der mittleren Zahl der Brustflossenstrahlen unterschei-den (14 bei annella, 15 bei loki, 16 bei tectus). Bganinops earlei unterscheidet sich von alien anderen Angehorigen der Gartung durch die grogen Kammschuppen (22-25 in Langsreihen); diese neue Art ist B. natans darin ahnlich, dass ein Kanal fehlt, der die hinteren Interorbitalporen verbindet, unterscheidet sich aber deudich dadurch, dass die Schuppen sich nach vorne bis zum Nacken erstrccken. Bganinops tectus ist nahe verwandt mit B. nexus Larson und B. erythrops (Jordan und Scale)--gemeinsames Merkmal ist das Fallen der vorderen und hinteren Nasenlocher. Unter-scheidungsmerkmal der neuen Art im Vergleich zu den bei-den anderen sind die fchlenden Kammschuppen unter der zweiten Rtickenflosse, iiber der Afterflosse und an der ven-tralen Seite des Schwanzstiels. Bryaninops translucens ist nahe verwandt mit B. dianneae Larson und B. spongicolus Suzuki, Bogorodsky & Randall--gemeinsames Merkmal ist die langliche und sehr flache Bauchflossenscheibe (im Vergleich zu der rundlichen und schalenformigen Scheibe bei den meisten anderen Arten der Gattung). Unterschei-dungsmerlunal aber der neuen Art sind die Kammschuppen am Nacken sowie eine weite, nach vorne gerichtete Tasche auf dem Frenum der Bauchscheibe.

Resume

Quatre nouvelles especes de Gobiides, Bganinops, sont decrits: B. annella sur base de 19 specimens collectes par des fans du mann du genre AnneIla dc Bali, d'Indonesie et de Lizard Island, Grande Barriere de Corail; B. earlei sur base de neuf specimens collectes dans une reserve marine et dans des herbiers marins adjacents, aux Iles D'Entrecasteaux, Papouasie-Nouvelle-Guinee; B. tectus sur base de six specimens collectes sur la gorgone Ellisella quadrilineata a Linnet Reef, Grande Barriere de Corail; et B. Prinslucens sur base de deux specimens en commensalisme sur une eponge, dans les lies Mentawai, au large sucl-ouest de Sumatra. Bganinops annella est tres proche de B. amplus Larson et B. loki Larson avec lequel ii partage un disque pelvien arrondi comme une tasse, le meme nombre de rayons de la dorsale et de l'anale et tete et corps sveltes; ii difrere par l'ouverture de rodie situee plus en avant, un peu avant la mange posterieure du preoper-ade, des series longitudinales d'ecailles de 34-45 et des rangees d'ecailles transversales de 8-10. Les trois especes se distinguent aussi par le nombre modal d'une unite dans la quantite de rayons pectoraux (annella avec 14, loki avec 15 et teems avec 16). Bganinops earlei se distingue de tous ses con-generes par de larges ecailles ctenoides (22-25 en series longi-tudinales); ii s'assimile a B. natans par l'absence d'un canal reliant les pores interorbitaux posterieurs, mais s'en distingue daircment par la presence d'ecailles s'etendant anterieure-ment jusqu'au rostre. Bganinops tectus est tres voisin de B. nexus Larson et de B. erythrops (Jordan et Seale) avec lequel ii partage l'absence de nostrils anterieurs et posterieurs. II se di-stingue de ces deux especes par l'absence d'ecailles ctenokles sous la seconde dorsale, au-dessus de l'anale et du cote ventral du pedoncule caudal. Biyaninops translucens est tres proche de B. dianneae Larson et de B. spongicolus Suzuki, Bogorodsky & Randall, avec lcsquels ii partage un disque pelvien oblong et tres aplati, et non arrondi et en forme de tasse comme pour la majorite des especes du genre. 11 se di-stingue aussi de ces deux especes par la presence d'ecailles ctendides sur le rostre et par une large poche, dirigee vers l'avant, sur le frein pelvien.

Sommario

Quattro nuove specie di gobidi del gcnere Bganinops sono qui descritte. Esse sono: B. annella, descritta sulla base di 19 esemplari raccolti da gorgonie del genere Annella a Bali, Indonesia e a Lizard Island, Great Barrier Reef; B. earlei, sulla base di nove esemplari raccolti alle Isole D'Entre-casteaux, Papua Nuova Guinea, su pennatule e adiacenti praterie marine; B. tectus, su sei esemplari raccolti su gor-gonia Ellisella quadrilineata a Cardillo Reef, Great Barrier Reef; B. translucens, su due esemplari, commensali su spugne presso le isole Mentawai al largo della costa sudoccidentale di Sumatra. Bryaninops annella e strettamente legata a B. amplus Larson e B. loki Larson con cui condivide un disco pelvico tondo e a tazza, lo stesso numero di raggi dorsali e anali e testa e corpo affusolati, ma se ne differenzia per avere l'apertura branchiale che si estende in avanti poco prima del margine posteriore del preopercolo, 34-45 scaglie in serie longitudinali, e 8-10 scaglie in serie trasversali. Le tre specie differiscono anche per un valore modale di uno nel conteg-gio dei raggi pettorali (annella con 14, loki con 15 e tectus con 16). Bryaninops earlei si differenzia da tutti i congeneri per avere grandi scaglie ctenoidi (22-25 in serie longitudi-nali); e simile a B. natans per l'assenza di un canale di col-legamento dei pori interorbitali posteriori, ma chiaramente diverso per avere scaglie che si estendono anteriormente sulla nuca. Bryaninops tectus 6 strettarnente legato a B. nexus Larson e B. erythrops (Jordan e Seale), con cui condivide l'assenza di narici anteriori e posteriori. Si differenzia da queste due specie per l'assenza di scaglie ctenoidi sotto la se-conda pinna dorsale, sopra la pinna anale e sul lato ventrale del peduncolo caudate. Bganinops translucens 6 strettamente legato a B. dianneae Larson e B. spongicolus Suzuki, Bogo-rodsky e Randall, con cui condivide un disco pelvico oblungo e motto piatto, invece di arrotondato e a tazza, come nella maggior parte delle altre specie del genere. Si dif-ferenzia anche da queste due specie per le scaglie ctenoidi sulla nuca e per un'ampia tasca sul frenulo pelvico diretta anteriormente.

INTRODUCTION

The Indo-Pacific goby genus Bryaninops was described by Smith (1959) for his new species ridens from Mozambique. Yoshino in Masuda et al. (1984: 284) reported B. ridens from the Yaeyama Islands, Japan living in close association with coral. Larson (1985) revised Bryaninops, synonymized Tenacigobius under Bryaninops, added Chaenogob-ius erythrops Jordan & Seale, 1906 from Samoa to the genus, and described six new species. Larson (1987) described Bryaninops nexus as new from the Great Barrier Reef and reported additional specimens of three other species. Herler & Hilgers (2005) published a valuable paper on the systematics and ecology of small reef species of gobies of the northern Red Sea, including three species of Bryaninops. Suzuki et al. (2012) described Bryaninops discus and B. spongicolus and added new records of B. loki and B. tigris for the Red Sea. We describe here four additional species of the genus Bryaninops, one from the Bali, Indonesia, one from the D'Entrecasteaux Islands of Papua New Guinea, one from Linnet Reef of the Great Barrier Reef, and one from the Mentawai Islands off Sumatra, all long overlooked due to initial misidentification.

MATERIALS AND METHODS

Data for description of the holotype are given first, followed by data for paratypes when different from the holotype. Lengths of specimens are given as standard length (SL), measured from the median anterior point of the upper lip to the base of the caudal fin (posterior end of the hypural plate); body depth is measured at the anus; head length is taken from the median anterior point of the upper lip to the upper attachment of the opercular membrane, and head depth and head width are maximum measurements; eye diameter is the greatest fleshy diameter, and interorbital width the least fleshy width; snout length is measured from the median anterior point of the upper lip to the nearest fleshy edge of the orbit; upper-jaw length from the same anterior point to the posterior end of the maxilla; caudal-peduncle depth is the least depth, and caudal-peduncle length is taken from the posterior end of the anal-fin base to the midpoint of the caudal-fin base; lengths of spines and rays are measured to their extreme bases; pectoral-fin length from the extreme base of the uppermost ray to the tip of the longest ray; pelvic-fin length from the base of the pelvic spine to the tip of the longest soft ray; caudal-fin length is the length of the longest ray. Morphometric data presented in Table I, II, IV and V are given as percentages of the standard length or head length.

Table I. Counts and measurements for Bryaninops annella.

Cat. No.           BPBM 41022            AMS I.
                                       24075-002,
                                      BPBM 41144,
                                     41146, NSMT-P
                                     114575 & USNM
                                         410095

Type                Holotype           Paratypes

Sex                   Male              9 males

First dorsal fin           VI                   VI

Second dorsal fin        I, 8                 I, 8

Anal fin                 I, 8                 I, 8

Pectoral fin               14                14-15

Pelvic fin               I, 5                 I, 5

Segmented rays of         9+8              8-9+7-8
caudal fin

Branched rays of          6+5                6-7+5
caudal fin

Longitudinal               40                34-45
scales series

Transverse scales           9                 8-10
rows backward

                           mm  % in             mm  % in SL
                                 SL

Standard length          26,6            19.1-24.4

Head lengdi               7,5   28%        5.6-7.1   28-31%

Head depth                3,7   14%        2.6-3.5   13-16%

Head width                4,1   15%        2.9-4.1   14-18%

Body depth at             3,3   13%        2.4-3.2   12-14%
anus

Caudal-peduncle           6,1   23%        4.0-5.6   21-23%
length

Caudal-peduncle           2,0    8%        1.4-2.0     7-9%
depth

Pectoral fin              4,6   17%       3.3-4.3*   17-20%
length

Pelvic fin length         2,2    8%        2.5-3.1   11-13%

Caudal fin length         4,8   18%      3.5-4.5**   18-20%

Snout length              2,3    9%        1.6-2.2    8-10%

Eye diameter              1,9    7%        1.5-2.0       8%

Upper jaw length          3,3   13%        2.3-3.1   12-14%

Fleshy                    1,0    4%        0.5-0.9     2-4%
interorbital
width

                      % in HL              % in HL

Snout length              30%               28-33%

Eye diameter              25%               25-29%

Upper jaw length          44%               40-46%

Fleshy                    13%                8-12%
interorbital
width

Cat. No.

Type

Sex                9 females

First dorsal fin          VI

Second dorsal fin       I, 8

Anal fin                I, 8

Pectoral fin           13-14

Pelvic fin              I, 5

Segmented rays of        9+8
caudal fin

Branched rays of     5-7+4-5
caudal fin

Longitudinal         34-42**
scales series

Transverse scales       8-10
rows backward

                          mm  % in SL

Standard length    14.8-18.7

Head lengdi          4.3-5.6   29-32%

Head depth           2.0-2.9   13-16%

Head width           2.2-2.9   15-17%

Body depth at        1.9-2.6   11-15%
anus

Caudal-peduncle      2.9-4.3   19-24%
length

Caudal-peduncle      1.1-1.7    7-10%
depth

Pectoral fin         2.6-3.3   16-20%
length

Pelvic fin length    1.9-2.4   11-14%

Caudal fin length    2.6-3.5   18-20%

Snout length         1.2-1.7     8-9%

Eye diameter         1.3-1.5     8-9%

Upper jaw length     1.7-2.4   11-13%

Fleshy               0.4-0.7     2-4%
interorbital
width

                     % in HL

Snout length          26-31%

Eye diameter          26-31%

Upper jaw length      38-42%

Fleshy                 7-13%
interorbital
width

*: 7 paratypes, ** paratypes.


Scales in longitudinal series are counted from the base of the caudal fin to the most anterior scale; transverse scale rows are counted from the origin of the anal fin obliquely dorsoposterior to the base of the second dorsal fin, ignoring a small half scale at each end.

The cephalic sensory system, fin-ray branching, and the number and distribution of scales were determined from preserved material stained with cyanine blue. The counts of gill rakers and teeth were facilitated by clearing and staining with alizarin red.

The terminology of the parts of the head, especially the sensory papillae, pores, and canals, follows Akihito in Masuda et al. (1984: 238, Fig. 36).

Bryaninops annella, n. sp. (Tables I, III; Figs 1-4)

Bryaninops loki--Larson. 1985: 81 (in part, Great Barrier Reef).

Holotype: BPBM 41022, male, 26.6 mm SL, Indonesia, Bali, northwest coast at Tulamben, 1[degrees]28.8' S, 99[degrees]9.7' E, drop-off in 9 m, commensal on the sea fan Annella mollis, J. E. Randall, 12 October 2000.

Paratypes: AMS I. 24075-002, formerly registered as paratypes of B. loki (AMS I. 24075-001), 7 specimens (2 males, 19.4-20.2 mm SL & 5 females, 16.8-18.7 mm SL), Australia, Qld., Lizard Island, 14[degrees]42' S, 145[degrees]27' E, drop-off in 18 m, midway between South and Bird Islands, from sea fan, H. Larson, 02 February 1977; BPBM 41144, 7 specimens (5 males, 19.1-22.0 mm SL & 2 females, 14.8-16.5 mm SL), same data as holotype; BPBM 41146, male, 24.4 mm SL, cleared and stained, drop-off in 22 m, commensal on a sea fan, other data same as holotype; NSMT-P 114575, male, 18.2 mm SL, same data as BPBM 41146; USMN 410095, a male, 23.8 mm SL & a female, 17.0 mm SL, same data as BPBM 41146.

Diagnosis: Dorsal-fin rays VI + I, 8; anal-fin rays I, 8; modal pectoral-fin rays 14, central 8 to 12 rays branched; scales on body reaching to above upper end of pectoral-fin base or posterior end of opercle, the longitudinal scale series 34-45; transverse scale rows 8-10; body elongate, the depth at anus 11-15% SL; head width slightly greater than head depth; snout short, 26-33% HL; eye 25-31% HL; upper jaw slightly protruding; gill opening extending forward to a vertical at or slightly beyond posterior edge of preopercle; no recurved canine teeth on mid-side of lower jaw; caudal fin truncate; pelvic disc round and cup-like; each pelvic spine flattened to a lobe and joined to frenum, with a wide anteriorly-directed pocket; pinkish gray in life, with a broad, blotchy, orange-red stripe extending posteriorly from ventral two-thirds of eye, narrowing posterior to abdomen, and continuing to base of caudal fin; upper lip and snout blotchy orange-red; fins translucent with pale pink rays; iris maroon with a narrow yellow ring around deep green pupil.

Description: Dorsal-fin rays VI + I, 8; anal-fin rays I, 8; pectoral-fin rays 14 (13 in four paratypes; 15 in one paratype), central ten rays branched (8 in one paratype; 9 in two paratypes; 11 in three paratypes; 12 in one paratype; broken in one paratype); longitudinal scale series 40 (34-45, mean of 40 in 17 paratypes); transverse scale rows 9 (8-10, mean of 9 in 18 paratypes); segmented caudal rays 9+8 (8+7 in two paratypes); branched caudal rays 6+5 (5+4 in two paratypes; 7+5 in two paratypes).

Body elongate and moderately compressed, body depth at anus 13% SL (11-15% in 18 paratypes); head length 28% SL (28-32% in 18 paratypes); head width slightly greater than head depth (equal in four paratypes); head depth 49% HL (46-52% in 18 paratypes); eye large, placed laterally and extending slightly above dorsal profile, 25% HL (25-31% in 18 paratypes); snout short, longer than eye (equal in six paratypes; shorter in two paratypes), 30% HL (26-33% in 18 paratypes); dorsal profile of snout slightly convex before eye and above upper lip. Mouth slightly oblique; upper jaw reaching posterior to anterior edge of pupil (reaching to a vertical at anterior edge of pupil in 8 paratypes); upper jaw slightly protruding. Gill opening narrow, reaching anteroventrally to a vertical at posterior edge of pre-opercle (slightly beyond posterior edge of preopercle in 12 paratypes).

The following characters are based on a cleared and stained paratype (BPBM 41146, male, 24.4 mm SL): gill rakers 0+9; teeth in both jaws conical, inwardly curved; five large teeth on each side at front of upper jaw, two to three rows of small teeth anteriorly, two rows centrally and posteriorly, outer row with 10 medium-sized teeth, inner row with small teeth; two large teeth on inner side at front of lower jaw; five to six rows anteriorly, outer row with 10 medium-sized teeth, inner rows with small teeth; a single row of medium teeth centrally and posteriorly.

Cephalic sensory systems shown in Fig. 1; anterior oculoscapular canal with pores B', C1 pore of left side open, but right side one not open, C2, single D, E, F and G' (B', C, single D, E, F and G' in 11 paratypes; B', C, D, E, F and G' in one paratype); three preopercular-canal pores, M', N and 0'.

Scales ctenoid; scales on body reaching forward to above posterior edge of opercle (above upper end of pectoral-fin base in 12 paratypes); some scales midlaterally on caudal peduncle about twice as large as other scales on peduncle; head (except above opercle), breast, base and axilla of pectoral fins, under pelvic fins, and midline of abdomen naked (also naked, a narrow area below first dorsal fin in 7 paratypes).

First dorsal fin triangular; the first to fourth spines of dorsal fin longest (relative length of spines variable in paratypes); second dorsal fin higher than first dorsal fin, the rays progressively shorter posteriorly; anal fin lower than second dorsal fin, the middle rays longest; rays of pectoral fins reaching posterior to pelvic fins, but not to anus; pelvic fins short, 13% SL (11-14% in 18 paratypes), the disc round and cup-like; each pelvic spine flattened to a lobe and joined to frenum, with a wide anteriorly-directed pocket; caudal fin truncate with rounded corners.

Color of holotype in preservative (Fig. 2): body pale yellow with scattered dark orange dots, progressively more numerous posteriorly; an irregular orangish brown streak midlater-ally on posterior half of body, breaking into a series of indistinct spots posteriorly; postorbital head pale yellow, except most of opercle and ventral part of head below preopercle and a gray patch dorsopos-terior to eye; snout and lips light gray; iris dark bluish gray; median and pelvic fins pale gray; pectoral fins translucent.

Color in li fe (Fig. 3 & 4): translucent pinkish gray, with a broad red stripe containing orangish blotches extending posteriorly from ventral two-thirds of eye, narrowing posterior to abdomen and continuing to base of caudal fin; upper lip and snout blotchy orange-red; an oblique whitish blotch within red stripe below dorsal fin; brain whitish with red dots; fins translucent with pale pink rays; iris maroon with a narrow yellow ring around deep green pupil; dorsomedial side of protruded part of eyeballs yellowish with red dots.

Distribution: The specimens on which we based the above description of Bryaninops annella are from Tulamben on the northeast coast of Bali and the island of Kakabia in the Banda Sea between Sulawesi and Flores. Noting that paratypes of Bryaninops loki were listed by Larson (1985: 82) as collected from a sea fan at Lizard Island, Great Barrier Reef, we requested a loan and determined they are B. annella. This species is probably wide-ranging in the East Indian region, as indicated by underwater photographs of a like-colored goby on the same species of sea fan, including one from Kimbe Bay, New Britain. However, because Bryaninops annella is so similar in life color to B. loki, and may occur on the same species of sea fan, such photos cannot be positively linked to B. annella. An exception is the one photographed by the second author at Kakabia, because of its estimated total length of 32 mm. Bryaninops loki is not known to exceed 28.5 mm in total length.

Etymology: This species is named annella in reference to its being commensal on the large sea fan Anne/la mollis (Nutting 1910).

Remarks: Bryaninops annella is similar to B. amplus Larson, B. loki Larson and B. tigris Larson with which it shares a rounded and cup-like pelvic fin, second dorsal and anal fin-rays counts, and slender head and body. It differs from these three species in having the gill opening extending forward to or slightly beyond a vertical at posterior margin of preopercle (vs. extending to below pectoral-fin base in B. amplus and B. tigris, and forward to posterior margin of orbit in B. loki). Bryaninops annella also differs from the first two species in having: the upper jaw slightly protruding (vs. jaws equal in B. amplus, and jaws equal or the lower jaw slightly protruding in B. loki); longitudinal scale series 34-45 (mean of 40) and transverse scale rows 8-10 (mean of 9) [vs. 37-69 (mean of 53) and 5-17 (mean of 13), respectively in B. amplus, and 33-53 (mean of 47) and 6-12 (mean of 10), respectively in B. loki]. In addition, B. annella differs from B. loki in having the pectoral fins reaching beyond the end of the pelvic fins (vs. not reaching beyond in B. lob), and in having modally one fewer pectoral rays based on 19 specimens of annella and 13 specimens of loki (Table III). Bryaninops annella also attains a larger average size. Of 22 lots of B. loki listed as type material, only two contain specimens 22 mm SL or longer; by contrast, five of the six lots of B. annella contain specimens longer than 22 mm SL.

Table III. Pectoral-ray counts of species of Bryaninops.

             13   14   15   16   17
B. annella    7   29    2
B. loki            3   21    3    1
B. tectus               2    8    2

Counted both sides


specimens longer than 22 mm SL.

Comparative material: Bryaninops loki, ROM 42738, paratypes, 10 specimens, 9-19 mm SL, Chagos Archipelago, Salomon Atoll, 21 March 1979; AMS I. 24075-001, paratypes, 3 specimens (2 males & 1 female), 16.3-18.3 mm SL, Australia, Queensland, Lizard Island, 14[degrees]42' S, 145[degrees]27' E, drop-off in 18 m, midway between South and Bird islands, from a sea fan, 02 February 1977.

Bryan mops earlei, n. sp. (Table II; Figs 5-7)

Table II. Counts and measurements for Bryaninops earlei.

Cat. No.             BPBM          BPBM 36954,
                     36972             NSMT-P
                                     114576 &
                                       USMN
                                     410094

Type               Holotype         Paratypes

Sex                  Male            2 males               5 females

First dorsal fin         VI                 VI                  VI

Second dorsal          I, 8             I, 7-8                 1,7
fin

Anal fin               I, 8               I, 8              I, 7-8

Pectoral fin             15              14-15               14-16

Pelvic fin             I, 5               I, 5                I, 5

Segmented rays of       8+8                9+8                 9+8
caudal fin

Branched rays of        6+5                6+5                6+5*
caudal fin

Longitudinal             24              23-25               24-25
scales series

Transverse scales         7                6-7                 6-7
rows backward

                         mm  % in           mm  % in SL         mm
                               SL

Standard length        12,1          12.7-14.0           11.4-13.3

Head length             3,8   31%      4.0-4.3      31%    3.4-3.9

Head depth              1,9   16%      2.0-2.3      16%    1.8-2.2

Head width              2,2   18%      2.3-2.5      18%    1.8-2.4

Body depth at           1,5   13%      1.7-2.0   13-14%    1.5-2.1
anus

Caudal-peduncle         2,4   20%      2.5-2.9   19-21%    2.4-2.6
length

Caudal-peduncle         1,0    8%      1.0-1.2     8-9%    0.9-1.0
depth

Pectoral fin            2,6   21%      2.9-3.4   22-24%    2.4-2.9
length

Pelvic fin              1,8   15%      1.9-2.0   14-15%    1.5-1.8
length

Caudal fin              2,9   24%      2.9-3.5   23-25%    2.5-2.9
length

Snout length            1,0    9%          1,2       9%    0.9-1.0

Eye diameter            1,0    9%      1.0-1.1       8%    0.9-1.0

Upper jaw length        1,6   13%          1,7   12-13%    1.4-1.6

Fleshy                  0,4    4%      0.4-0.5     3-4%    0.3-0.5
interorbital
width

                    % in HL            % in HL             % in HL

Snout length            28%             28-30%              24-30%

Eye diameter            28%                26%              24-30%

Upper jaw length        43%             40-42%              39-44%

Fleshy                  11%             10-12%              10-14%
interorbital
width

Cat. No.

Type

Sex                             one
                              subadult

First dorsal fin                  VI

Second dorsal                    1,7
fin

Anal fin                         1,7

Pectoral fin                      15

Pelvic fin                      I, 5

Segmented rays of                9+8
caudal fin

Branched rays of              broken
caudal fin

Longitudinal                      22
scales series

Transverse scales                  7
rows backward

                   % in SL        mm  % in
                                        SL

Standard length                  8,8

Head length         29-31%       2,7   31%

Head depth          15-18%       1,3   15%

Head width          16-19%       1,5   17%

Body depth at       13-17%       1,0   12%
anus

Caudal-peduncle     19-22%       2,2   25%
length

Caudal-peduncle       8-9%       0,6    7%
depth

Pectoral fin        21-25%       2,0   23%
length

Pelvic fin          13-15%       1,5   17%
length

Caudal fin          21-23%       1,9   22%
length

Snout length          8-9%       0,7    8%

Eye diameter          8-9%       0,7    8%

Upper jaw length    12-13%       1,0   11%

Fleshy                3-4%       0,3    3%
interorbital
width
                             % in HL

Snout length                     25%

Eye diameter                     26%

Upper jaw length                 37%

Fleshy                           11%
interorbital
width

*: 4 paratypes


Holotype: BPBM 36972, male, 12.1 mm SL, Papua New Guinea, D'Entrecasteaux Islands; Nor-manby Island, Bunama, 10[degrees]8' 36" N, 151[degrees]9' 18" E, on sea pen in sea grass bed, 4-5 m, J. L. Earle & J. E. Randall, 11 December 1995.

Paratypes: BPBM 36954, female, 12.0 mm SL, same locality as holotype, on sea pen, 8 m, J. E. Randall, 10 December 1995; NSMT-P 114576, 4 specimens (1 male, 12.7 mm SL, 2 females, 11.412.5 mm SL & 1 subadult, 8.8 mm SL), on sea pen and adjacent sea grass, other data same as holotype; USNM 410094, 3 specimens (1 male, 14.0 mm SL, cleared and stained & 2 females, 11.413.3 mm SL), same data as NSMT-P 114576.

Diagnosis: Dorsal-fin rays VI + I, 7-8; anal-fin rays I, 7-8; modal pectoral-fin rays 15, some middle rays branched; scales on body reaching forward dorsally to between middle of opercle or slightly anterior to posterior margin of preopercle; midline of nape naked; longitudinal scale series 22-25; transverse scale rows 6 or 7; body depth at anus 12-17% SL; head length 29-31% SL; head width slightly greater than head depth; head depth 4962% HL; snout length 24-30% HL; lower jaw slightly protruding, rounded in ventral view; gill opening wide, extending forward to below posterior edge of orbit; no interconnecting sensory canal above posterior edge of eye; no curved canine tooth at mid-side of lower jaw; pelvic fins cup-like; pelvic frenum with anteriorly-facing pocket; caudal fin rounded to truncate; head and body translucent pale blue dorsally (vertebral column visible as a dark brown band), crossed by 10 yellowish brown bars; side of body yellowish brown, all of head and body densely speckled with dark brown. A small species, the largest specimen measures 14.0 mm SL.

Description: Dorsal-fin rays VI + 1,8 (7 in six paratypes); anal-fin rays 1,8 (7 in three paratypes); pectoral-fin rays 15(14 in three paratypes; 16 in one paratype), eight rays branched (3-9 in seven paratypes; none branched in one subadult paratype); longitudinal scale series 24 (22-25 in paratypes); transverse scale rows 7 (6 in five paratypes); segmented caudal rays 8+8=16 (9+8=17 in eight paratypes); branched caudal rays 6+5=11 (broken in two paratypes).

Body elongate and moderately compressed; body depth at anus 13% SL (12-17% in eight paratypes); head length 31% SL (29-31% in eight paratypes); head width slightly greater than head depth (smaller in one paratype; equal in two paratypes); head depth 50% HL (49-62% in eight paratypes); eye large, placed laterally, and extending slightly above dorsal profile, 28% HL (24-30% in eight paratypes); snout equal to eye diameter (slightly longer than eye in two paratypes), and rounded in dorsal view; dorsal profile of snout concave before eye and convex above upper lip; mouth slightly oblique; jaws reaching posterior to a vertical at anterior edge of pupil; lower jaw slightly protruding; gill opening wide, reaching anteroven-trally to below posterior edge of pupil. .

1 The following characters are based on cleared and stained largest paratype of USNM 410094 (male, 14.0 mm SL): gill rakers 0+9; teeth in both jaws conical, inwardly curved; nine large teeth on each side at front of upper jaw, three to four rows of small teeth anteriorly, two rows centrally and posteriorly, outer row with 15 medium-sized teeth, inner row with small teeth; two large teeth at front of lower jaw, four to five rows of small teeth anteriorly, two rows of medium-sized teeth centrally and posteriorly.

Cephalic sensory system shown in Fig. 5; anterior oculoscapular-canal pores B'-C', D'-E-F1', F2'-G' (no pores in a subadult paratype; a groove instead of F2'-G' canal in one paratype); three preopercu-lar-canal pores, M', N and 0' (no pores in a subadult paratype).

Scales ctenoid; scales on body reaching forward to above middle of opercle (beyond posterior margin of preopercle in one paratype; no scales on nape and below first dorsal fin in a subadult paratype); midline of nape naked, but 6 scales along midline (5, 7, and 9 in paratypes; absent in a subadult paratype); rest of head, breast, base and axilla of pectoral fin, anterior part of abdomen, and midline of posterior part of abdomen naked (entire abdomen naked in two paratypes, including the subadult).

First dorsal fin triangular, the third spine of dorsal fin longest (second to third in one paratype), higher than second dorsal fin (equal in three paratypes; lower in two paratypes); tips of third to sixth dorsal spines reaching origin of second dorsal fin (not reaching in female and subadult paratypes; beyond in a male paratype); second dorsal fin high anteriorly, low posteriorly; anal fin lower than second dorsal fin (equal in one paratype), middle rays longest; pectoral fins reaching a vertical at genital papillae; pelvic fins short, 15% SL (13-17% in eight paratypes), the disc round and cup-like; each pelvic spine flattened to a lobe and joined to frenum, with a wide anteriorly-directed pocket; caudal fin round to truncate.

Color of holotype in preservative (Fig. 6): yellow, finely speckled with reddish brown dots; a series of 15 faint, close-set, curving, orangish bars on mid-side of body to caudal peduncle; head yellow, less densely speckled with reddish brown dots; white dorsally on snout and interorbital, narrowing onto nape; a narrow reddish brown stripe on side of snout and extending, slightly broader, posterior to eye; orbit with a narrow orange margin; median and pelvic fins translucent bluish white, the dorsal fins finely stippled with brown, the caudal with blue dots on rays and an orange-yellow spot of about pupil diameter dorsally at base of fin.

Color of paratype in life (BPBM 36954: Fig. 7): translucent pale blue dorsally on head and body (vertebral column visible as a dark brown band), crossed by 10 yellowish brown bars; side of body yellowish brown; all of head and body densely speckled with dark brown, most heavily and more darkly speckled over abdomen; dorsal fins with yellowish brown rays and transparent membranes dotted with brownish yellow, the outer margin broadly brownish yellow; anal and caudal fins translucent yellow with brown rays stippled in dark brown; iris densely stippled with black except dorsally where golden, speckled with dark brown; a very narrow yellow ring around pupil.

Distribution and Habitat: Presently known only from Normanby Island, D'Entrecasteaux Islands, Papua New Guinea. First detected on and collected from an unidentified sea pen and adjacent seagrass at a depth of 4.5 m.

Etymology: This species of goby is named for John L. Earle, who first discovered it and collected specimens with the second author.

Remarks: Bryaninops earlei differs from all other congeners in having large ctenoid scales (22-25 in longitudinal scale series). It is similar to B. natans, with which it shares the lack of a canal connecting posterior interorbital pores, but clearly differs in having scales on the nape reaching forward to above the opercle (compared to lacking scales anteriorly on the body of B. natans). Also B. earlei is drably colored, compared to B. natans with its pink eye and bright yellow abdomen.

Bryaninops tectus, n. sp.

(Tables III-IV; Figs 8-9)

Table IV Counts and measurements for Bryaninops tectus.

Cat. No.              BPBM         USMN             BPBM
                     29316       410731            41150
                                                  & NSMT
                                                  114626

Type              Holotype                     Paratypes

Sex                   Male          one              two
                                  males          females

First dorsal            VI           VI               VI
fin

Second dorsal          I,8         I, 8             I, 8
fin

Anal fin              I, 8         I, 8             I, 8

Pectoral fin            16           16               16

Pelvic fin             I,5         I, 5              1,5

Segmented rays         9+8          9+8              9+8
of caudal fin

Branched rays of       6+5          6+5              6+5
caudal fin

Longitudinal            50           48           39, 47
scales series

Transverse              11            9            8 * 9
scales rows
backward

                        mm  %in      mm  % in         mm  % in
                             SL            SL               SL

Standard length       19,0         17,6           16.1 *
                                                    16.7

Head length            5,9  31%     5,5   31%  4.8 * 5.2  30 *
                                                           31%

Head depth             2,7  14%     2,4   14%  2.1 * 2.2   13%

Head width             3,1  17%     2,9   16%  2.4 * 2.8  15 *
                                                           16%

Body depth of          1,9  10%     1,7   10%  1.7 * 1.8  10 *
anus                                                       11%

Caudal-peduncle         33  18%     3,3   19%  3.2 * 3.3   20%
length

Caudal-peduncle        1,5   8%     1,3    8%        1,2    7%
depth

Pectoral fin           3,3  18%     3,5   20%  2.9 * 3.2  18 *
length                                                     19%

Pelvic fin             2,4  13%     2,1   12%  1.9 * 2.1  12 *
length                                                     13%

Caudal fin             3,5  19%     3.3   19%  3.0 * 3.1  18 *
length                                                     19%

Snout length           1,7   9%     1.5    9%  1.4 * 1.5    9%

Eye diameter           1,6   9%     1,3    8%  1.2 * 1.3   7 *
                                                            8%

Upper jaw              2,3  12%     2,1   12%  1.8 * 2.0  11 *
length                                                     12%

Fleshy                 0,8   4%     1,0    5%  0.8 * 0.9    5%
interorbital
width

                   % in HL         % in           %in HL
                                     HL

Snout length           29%          28%         29 * 30%

Eye diameter           27%          24%              25%

Upper jaw              39%          38%              38%
length

Fleshy                 14%          17%         16 * 17%
interorbital
width

Cat. No.               NSMT
                     114626

                     & USMN
                     410731

Type

Sex                     two
                  subadults

First dorsal             VI
fin

Second dorsal          I, 8
fin

Anal fin               I, 8

Pectoral fin             16

Pelvic fin             I, 5

Segmented rays          8+7
of caudal fin

Branched rays of          0
caudal fin

Longitudinal         0 * 22
scales series

Transverse            0 * 1
scales rows
backward

                         mm  % in
                               SL

Standard length       8.7 *
                       10.5

Head length       2.9 * 3.3  32 *
                              33%

Head depth        1.3 * 1.7  15 *
                              16%

Head width        1.4 * 1.7   16%

Body depth of     0.9 * 1.1   10%
anus

Caudal-peduncle    1.6 * 19  18 *
length                        19%

Caudal-peduncle   0.6 * 0.8    7%
depth

Pectoral fin      1.9 * 2.1   20%
length                          *
                              21%

Pelvic fin        1.0 * 1.3   12%
length

Caudal fin        1.4 * 2.1  16 *
length                        20%

Snout length      0.7 * 0.9    8%

Eye diameter      0.7 * 0.9    8%

Upper jaw         1.0 * 1.3  11 *
length                        12%

Fleshy                  0,6   6 *
interorbital                   7%
width

                    % in HL

Snout length       25 * 27%

Eye diameter       23 * 26%

Upper jaw          35 * 39%
length

Fleshy             19 * 22%
interorbital
width

*: 4 paratypes.


Bryaninops loki--Larson. 1985: 81 (in part, Great Barrier Reef).

Holotype: BPBM 29316, male, 19.0 mm SL, formerly registered as one of paratypes of B. loki, Great Barrier Reef, Linnet Reef, west side of reef, 6-15 m, from the gorgonian Ellisella quadrilineata, caught by hand, H. K. Larson, 22 November 1975.

Paratypes: BPBM 44150, female, 16.7 mm SL, formerly registered as a part of BPBM 29316, same data as holotype; NSMT 114626, a female, 16.1 mm SL & a subadult, 10.5 mm SL, same data as BPBM 44150; USMN 410731, a male, 17.6 mm SL, cleared and stained & a subadult, 8.7 mm SL, same data as BPBM 44150

Diagnosis: Dorsal-fin rays VI + I, 8; anal-fin rays I, 8; pectoral-fin rays 16, some middle rays branched; scales on body reaching forward dorsally to end of second dorsal-fin, and absent ventrally; longitudinal scale series 39-50 (except 8.7 and 10.5 mm SL subadults), transverse scale rows 8-11 (except 8.7 and 10.5 mm SL subadults); body depth at anus 10-11% SL; head length 30-33% SL; head width slightly greater than head depth; head depth 42-50% HL; snout length 25-30% HL; anterior and posterior nostrils absent; lower jaw slightly protruding; gill opening reaching anteroventrally to below between posterior half and end of preopercle; two curved canine tooth at mid-side of lower jaw; pelvic fins cup-like; pelvic frenum with anteriorly-facing pocket; caudal fin truncate; color in alcohol dull orange-red, grading to yellow posteriorly on caudal peduncle and base of caudal fin; snout and lips dull yellow; dorsal fins with whitish rays, transparent membranes, and yellow along the base; caudal and pectoral fins with light yellowish rays and translucent membranes.

Description: Dorsal-fin rays VI + I, 8; anal-fin rays I 8; pectoral-fm rays 16, tips of ten rays branched (three rays branched in one paratype, none branched in four paratypes); longitudinal scale series 50 (37, 47, 48 in three paratypes; 22 in a subadult paratype; scales absent in smallest paratype); transverse scale rows 11 (8, 9, 9 in three paratypes; 1 in a subadult paratype; scales absent in smallest paratype); segmented caudal rays 9+8=17 (15 in two subadult paratypes); branched caudal rays 11.

Body elongate and rather compressed; body depth at anus 10% SL (11% in one paratype); head length 31% SL (30-33% in five paratypes); head width slightly greater than head depth (equal in a subadult paratype); head depth 45% HL (42-50% in five paratypes); eye large, placed laterally and extending slightly above dorsal profile, 27% HL (23-26% in Live paratypes); snout equal to eye diameter (slightly longer than eye in four paratypes); dorsal profile of snout concave before eye and convex above upper lip; anterior and posterior nostrils absent; mouth slightly oblique; jaws reaching posteriorly to a vertical at anterior edge of pupil; lower jaw slightly protruding; gill opening wide, reaching anteroventrally to below between posterior half and end of preopercle.

The following characters are based on cleared and stained largest paratype in USNM 410094 (male, 14.0 mm SL): gill rakers 2+9; teeth in both jaws conical, inwardly curved; five large teeth on each side at front of upper jaw, two to three rows of small teeth anteriorly, two rows centrally and posteriorly, outer row with 10 medium-sized teeth, inner row with small teeth; four and two large teeth on out and inner sides at front of lower jaw respectively, and two large teeth near middle of outside of jaw; two to three rows of small teeth anteriorly, a row of small teeth centrally, and a row of 6 medium-sized teeth posteriorly.

Cephalic sensory system shown in Fig. 8; anterior oculoscapular-canal pores B', C, single D, E, F and G' (double D in two paratypes; D', E', and four grooves instead of canal in a subadult paratype; no pore and no groove in smallest subadult paratype); three preopercular-canal pores, M', N and 0' (M' and N fused in one paratype; a groove instead of canal in smallest subadult paratype).

Scales ctenoid; scales dorsally on body reaching forward to below end of second dorsal-fin, and laterally reaching forward to above base of pectoral fin (to below fifth spine base of first dorsal fin in one paratype; only single row on midlateral line reaching below the origin of second dorsal fin in one subadult paratype; no scale in smallest subadult paratype); nape naked except for 2 isolated scales below origin of first dorsal fin (no isolated scale in five paratypes); rest of head, breast, abdomen, base and axil of pectoral fins, and dorsal part of body below first dorsal fin naked except for an isolated scale (no isolated scale in four paratypes); a narrow naked zone below second dorsal fin and above anal fin; ventral side of caudal peduncle naked.

First dorsal fin broken (triangular and the third spines of dorsal fin longest in four paratypes); second dorsal fin higher than first dorsal fin anteriorly, lower posteriorly; anal fin lower than second dorsal fin; pectoral fins to reaching beyond past end of pelvic fins, but not reaching anus; pelvic fins short, 13% SL (12-13% in five paratypes), the disc oval and cup-like; each pelvic spine flattened to a lobe and joined to frenum, with a wide anteriorly-directed pocket; caudal fin truncate.

Color of holotype in preservative (Fig. 9): head and body dull orange-red, grading to brownish yellow on snout and to yellow posteriorly on caudal peduncle; dorsal fins with whitish rays, translucent membranes, and yellow along base; caudal and pectoral fins with light yellow rays and translucent membranes; orbit rimmed in reddish; iris reddish gray.

Distribution: Presently known only from Linnet Reef of the Great Barrier Reef.

Etymology: This species is named Bryaninops tec-tus from the Latin meaning secret, hidden, or disguised, in reference to its being misidentified as another species.

Remarks: Bryaninops tectus is similar to B. nexus Larson and B. erythrops (Jordan and Seale) in lacking anterior and posterior nostrils. It differs from these two species in not having ctenoid scales below second dorsal fin, above anal fin, and ventral side of caudal peduncle (vs. scales present at these sites in the other species), mean lateral-scale count 46 in adults (vs. mean of 37 in B. nexus, and 41 in B. erythrops); mean body depth at anus 10% SL (vs. 15% in B. nexus, and 16% in B. erythrops); mean orbit diameter 25% (vs. 38% in B. nexus, and 32% in B. erythrops); gill opening anteroventrally to below a vertical between posterior half and end of preopercle (vs. below middle to posterior half of eye in B. nexus, and below posterior edge or posterior half of eye in B. erythrops).

Bryaninops tectus is also similar to B. loki Our six type specimens were the Bishop Museum's one lot of paratypes of B. loki, which we discovered when the pectoral-ray counts were modally one higher than the modal 15 of B. loki (Table III). Other more obvious differences from B. loki include a deeper body (average 14% SL, compared to 10% in B. tectus), presence of nostrils, longer gill opening (usually reaching orbit in B. loki, compared to below posterior half of preopercle in B. tectus), and scales dorsally on body reaching below origin of first dorsal fin in B. loki, compared to below to posterior end of the second dorsal fin in B. tectus.

Bryanznops translucens, n. sp.

(Table V; Figs 10-12)

Table V. Counts and measurements for Bryaninops translucens.

Cat. No.                   BPBM 37642        BPBM 41117

Type                         Holotype         Paratypes

Sex                              Male            Female

First dorsal fin                   VI                VI

Second dorsal fin                I, 8              I, 8

Anal fin                         I, 8              I, 8

Pectoral fin                       15                14

Pelvic fin                        I,5              I, 5

Segmented rays of caudal          9+8               9+8
fin

Branched rays of caudal           6+5               6+5
fin

Longitudinal scales                49                46
series

Transverse scales rows             11                 9
backward

                                   mm  % in          mm  % in
                                         SL                SL

Standard length                  22,8              16,9

Head length                       6,7   30%         5,1     %

Head depth                        3,0   13%         2,3   13%

Head width                        3,7   16%         2,7   16%

Body depth at anus                2,9   13%         2,2   13%

Caudal-peduncle length            5,4   24%         3,9   23%

Caudal-peduncle depth             1,8    8%          13    8%

Pectoral fin length               4,3   19%         3,3   20%

Pelvic fin length                 4,6   20%         3,6   21%

Caudal fin length                 4,0   18%         3,6   21%

Snout length                      2,1    9%         1,5    9%

Eye diameter                      1,7    8%         1,5    9%

Upper jaw length                  2,9   13%         2,1   12%

Fleshy interorbital width         0,7    3%         0,5    3%

                              % in HL           % in HL

Snout length                      31%               30%

Eye diameter                      25%               30%

Upper jaw length                  44%               41%

Fleshy interorbital width         10%                9%


Holotype: BPBM 37642, male, 22.8 mm SL, Indonesia, Mentawai Islands, Siberut Island, Sarabua Bay, 1[degrees]28.8' S, 99[degrees]9.7' E, commensal on unidentified, horizontally elongate, cylindrical sponge, J. E. Randall, 23 April 1997.

Paratype: BPBM 41147, female, 16.9 mm SL, cleared and stained, same data as holotype.

Diagnosis: Dorsal-fin rays VI + I, 8; anal-fin rays I, 8; pectoral-fin rays 14-15, central six rays branched; scales on body reaching to above posterior opercle; longitudinal scale series 46-49; transverse scale rows 9-11; body elongate, depth at anus 13% SL; head width slightly greater than head depth; snout short, 30-31% HL; eye 25-30% HL; lower jaw slightly protruding; gill opening extending forward nearly to a vertical at posterior edge of orbit; two pairs of recurved canine teeth on mid-side of lower jaw; caudal fin truncate; pelvic disc broadly oblong and flat, not reaching genital papilla; each pelvic spine flattened to a lobe and joined to frenum, with a wide anteriorly-directed pocket; translucent in life, except for a narrow red stripe on side of snout and a broad red stripe ventrally on postorbital head and body; light yellow in alcohol, except whitish on snout, lips, and fin rays.

Description: Dorsal-fin rays VI + I, 8; anal-fin rays I, 8; pectoral-fin rays 15 (14), central six rays branched; longitudinal scale series 49 (46); transverse scale rows 11 (9); segmented caudal rays 9+8; branched caudal rays 6+5.

Body elongate and moderately compressed; body depth at anus 13% SL; head length 30% SL; head width slightly greater than head depth; head depth 48% HL (45%); eye large, placed laterally and extending slightly above dorsal profile, 25% HL (30%); snout short, slightly longer than eye (equal to eye), 31% HL (30%) and rounded in dorsal view; dorsal profile of snout slightly convex before eye and above upper lip. Mouth slightly oblique; upper jaw reaching posterior to a vertical at anterior edge of pupil (beyond anterior edge of pupil); lower jaw slightly protruding. Gill opening wide, reaching anteroventrally nearly to a vertical at posterior edge of orbit.

The following characters are based on a cleared and stained paratype in BPBM 41147 (female, 16.9 mm SL): to gill rakers 0 + 10; teeth in both jaws conical, inwardly curved; four large teeth on each side at front of upper jaw, two to three rows of medium-sized teeth anteriorly, two rows centrally and posteriorly, outer row with eight medium-sized teeth, inner row with small teeth; a large tooth on inner side at front of lower jaw, and two large teeth near middle of outside of jaw; three rows of small teeth anteriorly, narrowing to single row of small teeth centrally and posteriorly.

Cephalic sensory systems shown in Fig. 10; anterior oculoscapular canal with pores B', C of right side open but left side one not open, single D, E, F, and G' (B', C, single D, E, F, and G'); three pre-opercular-canal pores, M', N and 0'.

Scales ctenoid; scales on body reaching forward to above posterior part of opercle; nape naked except for 4 scales dorsally along midline; rest of head, breast, base and axilla of pectoral fin, and midline of abdomen naked.

First dorsal fin trapezoid (triangular); the first to fourth spines of dorsal fin longest (second spine longest); second dorsal fin higher than first dorsal fin anteriorly, lower posteriorly; anal fin lower than second dorsal fin; pectoral fins not reaching past end of pelvic fins; pelvic fins moderately long, 20% SL (21%), disc broadly oblong and flat, reaching beyond anus, but not posterior to genital papilla; each pelvic spine flattened to a lobe and joined to frenum, with wide anteriorly-directed pocket; caudal fin truncate with rounded corners.

Color of holotype in preservative (Fig. 11): head and body pale brownish yellow; many brown dots midventrally on caudal peduncle; snout and jaws whitish; fin rays white.

Color of holotype in life (Fig. 12): translucent, except for a broad reddish stripe on ventral half of body, narrowly bordered above by brassy yellow and below by pinkish white, continuing anteriorly to eye, and posteriorly onto basal part of caudal fin; a narrow red stripe bordered above by pink and below by pale yellow, from upper lip to eye; cranium whitish with a narrow whitish band dorsally on vertebral column; eye light red with a rim of pale yellow around the deep green pupil; fins translucent with whitish rays.

Distribution: Presently known only from the Mentawai Islands, SW of Sumatra, but can be expected from at least other islands of Indonesia.

Etymology: This species is named translucens in reference to the dominant coloration.

Remarks: Bryaninops translucens is very similar to B. dianneae Larson and B. spongicolus Suzuki, Bogorodsky & Randall, with which it shares an oblong and very flat pelvic disc, instead of rounded and cup-like as in most other species of the genus. It also differs from these two species in having: ctenoid scales on nape reaching forward to above posterior part of opercle (vs. no scales on nape in the other species), a wide anteriorly-directed pocket on pelvic frenum (vs. absent), head length 30% SL (vs. 3536% in B. dianneae, and 27% in B. spongicolus); and long upper jaw, extending posterior to a vertical at anterior edge of pupil (vs. before anterior edge of pupil). In addition, B. translucens differs from B. spongicolus in having the snout length 30-31% HL and the interorbital width 9-10% HL (vs. 41%, and 16% in B. spongicolus).

Comparative material: Bryaninops dianneae, BPBM 38983, 7 specimens, 14-24 mm SL, Fiji, 15 March 2002; B. spongicolus, BPBM 41004, holotype, male, 24.5 mm SL, Red Sea, Sudan, Wingate Reef, 14 October 2009.

ACKNOWLEDGEMENTS

We thank Bob and Dinah Halstead for extending an invitation to the second author, John L. Earle, and Richard L. Pyle for a cruise aboard their dive vessel Telita to the D'Entrecasteaux Islands of Papua New Guinea, and to Dr. Andreas Kunzmann for his invitation for a dive cruise from Sumatra to the Mentawai Islands. We also grateful to Kiyotaka Hatooka of the Osaka Museum of Natural History for x-rays and to Helen A. Randall for review of the manuscript.

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Received: 13 January 2013--Accepted: 13 December 2013

Toshiyuki Suzulci (1) and John E. Randall (2) *

(1) Kawanishi-midoridai Senior High School, 1-8 Kouyoudai, Kawanishi, Hyogo 666-0115, Japan.

E-mail: trimma-toshiyuki@hop.ocn.ne.jp

(2) Bishop Museum, 1525 Bernice St., Honolulu, HI 96817-2704, USA. E-mail: jackr@hawaii.rr.com

* To whom correspondence and reprint requests should be addressed. E-mail: jackr@hawaii.rr.com
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Author:Suzuki, Toshiyuki; Randall, John E.
Publication:aqua: International Journal of Ichthyology
Article Type:Report
Geographic Code:9JAPA
Date:Jan 15, 2014
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