Nothobranchius is a genus of small, freshwater killifish, classified in the family Nothobranchiidae in the order Cyprinodontiformes. There are about a hundred species in the genus, many with very small distributions. They are primarily native to East Africa from Sudan to northern South Africa, whereas a dozen species are found in the upper Congo River Basin; the greatest species richness is in Tanzania.
The Rivulidae are a family of killifishes in the order Cyprinodontiformes. They are commonly known as rivulids, South American killifish or New World killifish. The latter names are slightly misleading, however, as they are neither restricted to South America, though most are in fact found there, nor are they the only killifishes from the Americas. Occasionally, they are still referred to as rivulines, a term dating back to when they were considered a subfamily of the Aplocheilidae.
Hypsopanchax is a genus of poeciliids native to freshwater habitats in Middle Africa.
Marcusenius is a genus of the elephantfish group native to Africa. Its members are highly diverse in size, with the smallest species reaching less than 15 cm (6 in) and the largest more than 1 m (3.3 ft).
Nothobranchius kirki, the redfin notho, is a species of killifish from the family Nothobranchiidae which is endemic to Malawi where it occurs in the drainages of Lake Malawi and Lake Chilwa. It inhabits swamps and ephemeral pools. This species can reach a length of 5 centimetres (2.0 in) TL. It can also be found in the aquarium trade. This species was described in 1969 by the South African ichthyologist Rex Jubb from types collected by R. G. Kirk, who was a fish biologist of the Agricultural Research Services part of the Ministry of Natural Resources of Malawi, from a pool adjacent to the Likangala River which forms part of the endorheic basin of Lake Chilwa in Malawi.
Nothobranchius steinforti is a species of killifish in the family Nothobranchiidae. It is endemic to Upper Wami River drainage, Tanzania. Its natural habitat is intermittent freshwater marshes, pools and rice fields. This species was described in 1977 by Rudolf Hans Wildekamp with the type locality given as "8 kilometers from Kimamba, Tanzania". The specific name honours the Dutch aquarist Theo Steinfort who helped collect the type and bred this species in captivity, making it available to other killifish hobbyists.
The blue lyretail, also known as the Gardner's killi and formerly as the steel-blue aphyosemion, is a species of killifish. It is endemic to freshwater habitats in Nigeria and Cameroon.
Nothobranchiidae are a family of bony fishes containing roughly 300 species, also known as African rivulines. They are small killifish, usually measuring about 5 centimetres (2.0 in). They are limited to Africa, living in fresh water but being also somewhat salt-tolerant. They are also found in muddy or brackish water. Some species are kept as aquarium pets. They have frilly fins and many are brightly colored. They were formerly included in the family Aplocheilidae ; a return to that broader family has recently been suggested.
Profundulus is a genus of fish in the family Profundulidae endemic to Mexico and northern Central America. It was regarded as the only genus in the Profundulidae but workers have split the genus and raised a second genus Tlaloc.
Fundulopanchax is a genus of killifish living in near-coastal fresh water streams and lakes in Western Africa. All species were previously biologically classified as members of the genus Aphyosemion, with the exception of Fundulopanchax avichang, F. gresensi and F. kamdemi, which were all scientifically described after the major revision of the Aphyosemion complex.
Epiplatys is a genus of African rivuline in the family Nothobranchiidae endemic to Africa as the name indicates. Several of these species are popular aquarium fish.
Pronothobranchius is a genus of aplocheilid fish native to western Africa.
Scriptaphyosemion is a genus of killifish from the family Nothobranchiidae which is endemic to Africa.
Lacustricola is a genus of poeciliids native to East, Southern and Middle Africa.
Micropanchax is a genus of poeciliids native to Africa.
Plataplochilus is a genus of poeciliid fishes native to Middle Africa.
Austrolebias is a genus of killifish in the family Rivulidae. These annual killifish live in temporary pools, swamps and streams in the Río de la Plata, Patos–Mirim and Mamoré basins in South America.
Anablepsoides is a genus of killifish in the family Rivulidae native to tropical South America and the Lesser Antilles. The majority are from the Amazon and Orinoco basins, as well as freshwater systems in the Guiana Shield, but a few species are from northern Venezuela, northeastern Brazil and the Lesser Antilles. Although largely restricted to lowlands, a few species occur in the lower East Andean foothills. They are mostly found in shallow fresh water swamps, streams, edges of rivers, ponds and pools, but a few may occur in brackish estuaries. They are able to jump over land and breathe air for short periods, allowing them to access isolated waters inhabited by few or no other fish. Several Anablepsoides species have small distributions and some are seriously threatened by habitat loss; the entire known range of A. xinguensis is in the area flooded by the Belo Monte Dam.
Laimosemion is a genus of fish in the family Rivulidae from the Amazon basin and basins in the Guiana Shield in tropical South America. They mostly inhabit small streams, creeks, swamps and pools in lowlands, but locally occur to an altitude of 1,300 m (4,300 ft).
Procatopodinae is a subfamily of the family Poeciliidae, the "livebearers", in the order Cyprinodontiformes. Some authorities treat this subfamily as a family, the Procatopodidae, including the banded lampeye.
