Notothenioidei is one of 19 suborders of the order Perciformes. The group is found mainly in Antarctic and Subantarctic waters, with some species ranging north to southern Australia and southern South America. Notothenioids constitute approximately 90% of the fish biomass in the continental shelf waters surrounding Antarctica.
The wreckfish are a small group of ray-finned fish in the genus Polyprion, belonging to the monotypic family Polyprionidae in the order Acropomatiformes.
Trichogaster is a genus of gouramis native to South Asia from Pakistan to Myanmar. It is the only genus in the monotypic subfamily Trichogastrinae as set out in the 5th Edition of Fishes of the World, although that book states that there are two genera, the other being Colisa which is treated as a synonym of Trichogaster by Fishbase and the Catalog of Fishes. Fishbase also places the genus in the Luciocephalinae. Species of this genus are very popular in the aquarium trade.
The sea chubs, also known as rudderfish and pilot fish and in Hawaiian as enenue or nenue, are a family, Kyphosidae, of fishes in the order Perciformes native to the Atlantic, Indian and Pacific Oceans usually close to shore in marine waters.
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.
Cairnsichthys is a genus of rainbowfishes from the subfamily Melanotaeniinae. The genus is endemic to freshwater streams in eastern Queensland in north eastern Australia. The genus was designated as a monotypic genus in 1928 by John T. Nichols and Henry C. Raven but in 2018 a second species was assigned to the genus.
Craterocephalus is a genus of small and slender brackish or freshwater silversides from Australia and New Guinea. It is the most diverse genus in the family Atherinidae, containing 25 of the 71 species.
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.
Limnothrissa is a small genus of freshwater ray-finned fishes elonging to the family Dorosomatidae, which also includes the gizzard shads and sardinellas. The species in this genus are endemic to Africa. It was considered to be monospecific but L. strappersi, a Lake Mweru endemic, has been recognised as a valid species. The Lake Tanganyika sardine was endemic to Lake Tanganyika but has been introduced to Lake Kivu, Lake Kariba and the Cahora Bassa reservoir.
Beaufortia is a genus of gastromyzontid loaches from China and mainland Southeast Asia.
Muraenesox is a small genus of eels found throughout the Indo-Pacific. It currently has three described species as most species have been moved to other genera. Members are found in the Indo-West Pacific.
Microthrissa is a genus of freshwater ray-finned fishes belonging to the family Dorosomatidae, which also includes the gizzard shads and sardinellas. The species in this genus are endemic to Africa.
Erromyzon is a genus of fish in the family Gastromyzontidae endemic to China and Vietnam.
Glaniopsis is a small genus of loaches endemic to the island of Borneo.
Hypergastromyzon is a genus of ray-finned fish belonging to the family Gastromyzontidae, commonly called the hillstream loaches, although this also refers to the loaches in the family Balitoridae. The loaches in this genus are endemic to the island of Borneo in Southeast Asia.
Bibarba is a genus of loach that is found in the Chengjiang River and Hongshuihe River in China.
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.
The Gastromyzontidae are a family of loaches native to China and Southeast Asia, where typically found in streams and rivers with a fast current. The family includes about 137 species in eighteen genera. This family was resurrected by M. Kottelat in his review and revision of the loaches in 2012. They are commonly called hillstream loaches.
Pseudosinocyclocheilus jinxiensis is a species of cavefish in the family Cyprinidae endemic to Xiaolong Spring in Jinxi County, Guangxi, China. In 2016, it was proposed that this species should be placed in its own genus Pseudosinocyclocheilus, a move subsequently supported by Catalog of Fishes and FishBase.
Labigastromyzon is a genus of ray-finned fish belonging to the family Gastromyzontidae, commonly called the hillstream loaches, although this also refers to the loaches in the family Balitoridae. The loaches in the genus are found in China.
