The African lanternshark is a shark of the family Etmopteridae found in the eastern Atlantic between latitudes 12°N and 18°S, at depths between 300 and 1,000 m. Its length is up to 30 cm.
The San Marcos gambusia is a likely extinct species of Gambusia from the family Poeciliidae that was found only in the San Marcos Springs of Central Texas. The fish has not been seen since 1983.
Grammatotria lemairii is a species of cichlid endemic to Lake Tanganyika in East Africa where it prefers areas with sandy substrates. This species can reach a length of 26 centimetres (10 in) TL. It is currently the only known member of its genus. The species is occasionally kept as an aquarium fish. The specific name honours Lieutenant Charles Lemaire (1863-1925) who was the leader of the Congo Free State Expedition, which collected specimens of fishes at Lake Tanganyika, including the type of G. lemairii.
Microctenopoma ansorgii is a small freshwater fish, known in the aquarium trade as the ornate ctenopoma, orange ctenopoma, ornate climbing perch, pretty ctenopoma, or rainbow ctenopoma. It is related to the more familiar spotted climbing perch, but looks very different. Its body is more elongated and rounded, with fins with red and black stripes; the color intensifies when the fish are displaying, with black bars becoming visible on the body. The ornate ctenopoma spawns at night, laying its eggs on a floating bubble nest like its relatives in the osphronemidae. It lives in the slow-flowing forest streams of the Congo Basin, where it feeds on worms, insect larvae, and other aquatic invertebrates. It is the most common member of its genus in the aquarium trade, where it is known for being a shy, easily bullied fish that needs live or frozen foods and which benefits from the presence of smaller dither fish to encourage it to come out of hiding.
The Jackson's barb is a species of cyprinid fish.
The Guinean bichir is a ray-finned fish from rivers and other freshwater habitats in Western Africa, ranging from Guinea-Bissau to Nigeria. It reaches a maximum length of 72 cm (28 in), is greenish-brown to black in color, and has large, dark spots and blotches on its sides. On mature specimens, the bottom jaw may protrude very slightly. It is similar to some other bichirs with which it can be confused.
Genicanthus semifasciatus, the Japanese swallow, is a species of marine ray-finned fish, a marine angelfish, belonging to the family Pomacanthidae. It is found in the Western Pacific.
Enteromius ansorgii is a species of ray-finned fish in the genus Enteromius. It is endemic to Angola.
Salarias patzneri, Patzner's blenny, is a species of combtooth blenny found in coral reefs in the western central Pacific ocean. This species can reach a length of 5.5 centimetres (2.2 in) TL. The specific name honours the Austrian ichthyologist Robert A. Patzner who worked on the genitalia of blennies and who shared specimens with Hans Bath.
Knipowitschia cameliae, the Danube delta dwarf goby, is a species of goby known only from the brackish and fresh waters of a lagoon south of the Danube Delta in Romania. This fish is a shallow water species being found in waters less than 1 metre (3.3 ft) deep. This species can reach a length of 3.2 centimetres (1.3 in) SL. This species has been assessed by the IUCN as Critically Endangered, possibly extinct, it was last recorded in 1994 and surveys in that year and 1998 have failed to record the species. The specific name honours Camelia Iliana Nalbant, the wife of the senior author.
Ladigesia roloffi, the Sierra Leone dwarf characin, is a species of harmless African tetra that is found in Sierra Leone and Liberia, Africa. L. roloffi is the only member of its genus. The fish was named in honor of German aquarist Erhard Roloff (1903–1980), who collected the type specimen. They are a social species generally living in schools at mid depths and surface level fresh water. It lives for five years. Ninety-seven percent of their natural habitat has been lost.
The streaky clingfish is a species of clingfish only known from one specimen collected off the coast of southern Mozambique. The length of the only known specimen was 2.1 centimetres (0.83 in) SL. This species is the only known member of its genus. The single known specimen was collected at Ponte Zavora in southern Mozambique by Mrs D.N. Lusher, who sent it to J.L.B. Smith. Smith described the species from this type and named it in honour of Mrs Lusher, so the spelling should be lusherae to reflect her gender.
Salvelinus inframundus, also known as Orkney charr is a cold-water fish in the family Salmonidae which is endemic to Scotland.
Ebomegobius goodi is a species of brackish water goby native to a stream in Cameroon and is known from a single specimen. This species grows to a length of 3.5 centimetres (1.4 in) SL. This species is the only known member of its genus. The genus name is a compound of Ebomé, the brackish stream where the species was found, and gobius while the specific name honours the missionary Albert Irwin Good (1884-1975), who collected West African fishes and collected the type of this species.
Polyipnus polli, commonly known as the round hatchetfish, is a species of ray-finned fish in the family Sternoptychidae. It occurs in deep water in the eastern Atlantic Ocean, at depths between about 250 and 600 metres.
William John Ansorge was a physician who worked in Angola and Uganda and is known for exploring the fauna of the African region. A large number of species have been named after him based on the specimens that he collected and sent back to England.
The Danube delta gudgeon was a species of cyprinid fish endemic to the lower Danube in Romania and the Ukraine. It was last recorded in the 1960s, with many studies conducted in its home range, all failing to find the species.
Periophthalmodon septemradiatus is a species of mudskipper found along tropical shorelines of the eastern Indian Ocean where it occurs in marine, brackish and fresh waters from India to Mekong Delta Vietnam, Indonesia. It is found along in estuaries as well as in the rivers.
Nannopetersius ansorgii is a species of fish in the African tetra family, found in the central Rivers in Africa. The rivers in Africa are: the Benito (Mbini), the Chiloango, the Kouilou, the Loeme and the Ogooué rivers of Gabon and Equatorial Guinea and the Bengo and Congo River basins of Angola and Democratic Republic of the Congo. This species reaches a length of 7.0 cm (2.8 in).
Epiplatys ansorgii is a species of fish in the family Nothobranchiidae, an African rivuline, native to fresh water habitats in the southern tributaries of the lower Ogowe River system and then southward to the lower Congo River system in West Africa. This species reaches a length of 8.0 cm (3.1 in).
