Ambloplites is a genus of North American freshwater fish in the sunfish family (Centrarchidae) of order Perciformes. The type species is A. rupestris, the rock bass, and the species of this genus are known collectively as the rock basses.
Belontia, sometimes referred to combtail gouramies, is a genus of gouramis, the only genus within the subfamily Belontiinae, native to freshwater habitats in Southeast Asia and Sri Lanka. These are medium sized to large gouramies that are seldom kept in aquariums due to their aggression and relative lack of the color common to the gouramies.
The Lake Malawi sardine, lake sardine, or usipa, is an African species of freshwater fish in the family Cyprinidae. It is endemic to Lake Malawi and its outlet, the (upper) Shire River; it is found in Malawi, Mozambique, and Tanzania.
Rasboroides vaterifloris, known as the pearly rasbora, vateria flower rasbora or fire rasbora, is a species of freshwater cyprinid fish endemic to Sri Lanka. It can be found in the shallow waters of shaded, slow-flowing clear streams with a silt substrate. It also prefers areas with plentiful leaf debris. Its diet consists of detritus and terrestrial insects. This species can reach a length of 4 centimetres (1.6 in) TL. It can also be found in the aquarium trade.
Characodon is a genus of splitfins endemic to north–central Mexico. Two of the species are highly threatened and restricted to pools, ponds and springs in the upper San Pedro Mezquital River basin in Durango. The third species, C. garmani, was restricted to springs near Parras in Coahuila, but it became extinct when they dried out.
The Chapultepec splitfin, known locally as mexcalpique, is a critically endangered species of fish in the family Goodeidae. It is endemic to Mexico and was originally restricted to lakes and wetlands in the Valley of Mexico, including Lake Texcoco. Through man-made channels it was able to spread to the upper Pánuco River basin. Most native populations disappeared as they were at or near Mexico City, with the waters either being reclaimed, drained, heavily polluted or infested with introduced species. Today the Chapultepec splitfin is only known to survive in three lakes in the Chapultepec park of Mexico City, Lake Xochimilco, Lake Zumpango, Laguna de Tecocomulco northeast of the City where perhaps introduced, and parts of the Pánuco River basin. Most of these remaining populations are small. This species was originally described as Cyprinus viviparus in 1837 by Miguel Bustamante y Septién with the type locality given as "Mexico". In 1860 Pieter Bleeker raised the genus Girardinichthys with a new species Girardinichthys viviparus as its type species, this subsequently proved to be a taxonomy of Cyprinus viviparus.
The katrana is a species of fish in the Bedotiidae family. It is endemic to the basin of Lake Alaotra in Madagascar. Its natural habitats are rivers and freshwater lakes. It is threatened by habitat loss. This species was described by Jacques Pellegrin as Atherina alaotrensis with the type locality of Lake Aloatra.
The blue lyretail, also known as the Gardner's killi and formerly as the steel-blue aphyosemion. It is a species of killifish endemic to freshwater habitats in Nigeria and Cameroon.
Pseudorasbora is a genus of small freshwater fish native to eastern Asia, including China, Korea, Japan and Siberia. P. parva, has been introduced to regions outside its native range and is considered invasive.
Enteromius baudoni is a species of tropical cyprinid freshwater fish from Central and Western Africa. It is found in western Africa, in the river basins of the Chad Basin, the Volta basin, the Niger River basin, the Gambia River basin, the Senegal River basin, the Sassandra River basin, and the Bandama River basin. In central Africa, it is found in the Ubangui River ecosystem. It typically inhabits tropical freshwater ecosystems between 24 and 26 °C. It was originally described by Belgian-British zoologist George Albert Boulenger as Barbus baudoni in 1918, and the holotype, collected from Bangui, Central African Republic, is stored at the Muséum national d'Histoire naturelle in Paris. The species was originally classified in the Barbus genus, but was reclassified as belonging to the Enteromius genus in 2015 after examining extensive taxon, geographical, and genomic sampling of the species in the family Cyprinidae.
Bangana is a genus of fish in the family Cyprinidae, the carps and minnows. It is distributed across much of southern and eastern Asia. Species live mainly in the flowing waters of tropical and subtropical rivers.
Rasboroides is a genus of small cyprinid fishes endemic to Sri Lanka. They are found in small, slow-flowing and shaded streams in the southwestern part of the island. They are essentially restricted to lowlands, although one introduced population occurs at an altitude of 980 m (3,220 ft). They are calm, social and attractively colored fish that sometimes are kept in aquariums.
Zingel zingel, the zingel, is a species of freshwater ray-finned fish in the family Percidae. It is found in fast-flowing streams in southeastern Europe. It is the type species of the genus Zingel.
Crossocheilus reticulatus is a freshwater fish in the family Cyprinidae from Southeast Asia. It grows to 17 cm (6.7 in) standard length.
Rasboroides rohani, is a species of freshwater cyprinid fish endemic to Sri Lanka where only known from shallow, slow-flowing, shady streams near Suriyakanda in the Walawe River basin. It was scientifically described in 2013, but a comprehensive review in 2018 based on morphometry, meristics and mtDNA disputed its validity, showing that it is a junior synonym of R. pallidus. The occurrence of R. pallidus in the Walawe River basin is not natural, but the result of translocations.
The short-tailed pipefish is a species of fish in the family Syngnathidae. It is found in fresh and brackish waters from Sri Lanka and India east to southern Japan and the Society Islands. It inhabits places with little or no current in rivers, streams and estuaries.
Laubuka varuna is a cyprinid fish species in the family Cyprinidae. It is endemic to Sri Lanka.
Nematolebias whitei, the Rio pearlfish, is a species of killifish from the family Rivulidae. It is endemic to Brazil where it is found in the Laguna de Araruama basin, Das Ostras River basin and in coastal plains in the vicinity of the mouth of São João River in Rio de Janeiro State. It was introduced to California in the 20th Century but they did not become established there.
Horadandia brittani is a species of very small cyprinid fish that is endemic to coastal floodplains in South India. Originally described as a subspecies of H. atukorali, it was elevated to species level in 2013. It can grow to 2 cm (0.79 in) standard length.
Etheosomatinae is a species-rich subfamily of freshwater ray-finned fish, the members of which are commonly known as the darters. The subfamily is part of the family Percidae which also includes the perches, ruffes and pikeperches. The family is endemic to North America. It consists of three to five different genera and well over 200 species.
