WAnabarilius macrolepis is an extinct species of ray-finned fish in the genus Anabarilius that was endemic to Yilong Lake in Yunnan, China. It is believed that it became extinct when Yilong Lake dried up in 1981, as a result of water abstraction for agriculture. The species was not observed in 1983–84, and was declared extinct in 2011.
WThe Beyşehir bleak, known in Turkish as gökçe balığı, was a species of freshwater fish in the family Cyprinidae, now presumed extinct.
WThe blue walleye, also called the blue pike, was a unique color morph of walleye which was endemic to the Great Lakes of North America. Morphometric studies led biologists to classify the blue walleye as a separate species in 1926, although it was later downgraded to a subspecies. Listed as an endangered species by the United States in 1967, it was declared extinct in 1983.
WCoregonus fera, commonly called the true fera, is a presumed extinct freshwater fish from Lake Geneva in Switzerland and France.
WCoregonus gutturosus, the Lake Constance whitefish, is an extinct species of whitefish in the salmon family Salmonidae. It was formerly found only in deep areas of Lake Constance in the Alps.
WCyprinus yilongensis is an extinct species of ray-finned fish in the family Cyprinidae. It was found only in Yilong Lake, Yunnan, China. It was last seen before 1981, when the lake was drained for 20 days, presumably causing the species' extermination.
WThe gravenche, also known as the Lake Geneva whitefish or the little fera, is a presumably extinct freshwater fish from Lake Geneva in Switzerland and France.
WThe New Zealand grayling, also known as upokororo, pokororo, paneroro, and kanaekura (Māori), is an extinct smelt of the genus Prototroctes, which was found only in lowland rivers and streams of New Zealand. They were an amphidromous species—spawning in freshwater streams and developing to maturity in saltwater. Their length was between 20 and 40 cm.
WRhizosomichthys totae is a species of catfish of the family Trichomycteridae, and the only species of the genus Rhizosomichthys. This fish grew to about 13.8 centimetres (5.4 in) and was endemic to Colombia where it occurred in the Lake Tota basin. It is listed as a critically endangered species by the IUCN Red List.