The genus Hemigrammus Gill, 1858 is one of the most speciose genera within the family Characidae, with 50 species currently recognized as valid (Lima et al. 2003, Lima et al. 2009). Similar to most genera of Characidae previously assigned to the sub-family Tetragonopterinae (sensu Gery 1977), Hemigrammus almost certainly does not constitute a monophyletic assemblage. In...]]>Mon, 20 Jul 2009 00:00:00 http://www.thefreelibrary.com/Nothobranchius+nubaensis+(Cyprinodontiformes%3a+Nothobranchiidae)+a+new...-a0206194879INTRODUCTION

The freshwater fish fauna of Sudan is poorly known. It was studied by Sandon (1950a, 1950b, 1957) and more recently by Bailey & Hickley (1986), Hickley & Bailey (1987), Leveque et al. (1991), and Bailey (1994). The freshwater fish fauna of Ethiopia is better known (Tedla 1973, Tedla & Meskel 1981, Dgebuadze et al. 1994, Golubtsov et al. 1995, de Graaf et al....]]>Mon, 20 Jul 2009 00:00:00 http://www.thefreelibrary.com/Heteroconger+mercyae%2c+a+new+species+of+garden+eel+(Congridae%3a...-a0206194878INTRODUCTION

Heterocongrine garden eels are common inhabitants of sand-rubble areas, frequently in the vicinity of coral reefs. The group contains 32 species worldwide in two genera (Eschmeyer & Fricke 2009), Gorgasia Meek & Hildebrand, 1923 and Heteroconger Bleeker, 1868. The majority, with the exception of eight species from the eastern Pacific and Atlantic, are restricted to...]]>Mon, 20 Jul 2009 00:00:00 http://www.thefreelibrary.com/Two+new+species+of+damselfishes+(Pomacentridae%3a+Chromis)+from...-a0206194877INTRODUCTION

The pomacentrid genus Chromis Cuvier, 1814 is abundant throughout tropical and warm temperate seas (Allen 1991). The group is particularly conspicuous on coral reefs of the Indo-west and central Pacific region, typically found in large mid-water feeding aggregations. Similar to most pomacentrids, the majority of Chromis are restricted to depths of less than 30 m, with...]]>