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Fishes are a paraphyletic group and for this reason, the class Pisces seen in older reference works is no longer used in formal taxonomy.Traditional classification divides fish into three extant classes (Agnatha, Chondrichthyes, and Osteichthyes), and with extinct forms sometimes classified within those groups, sometimes as their own classes: [1]
As of September 2016, the International Union for Conservation of Nature (IUCN) lists 65 extinct fish species, 87 possibly extinct fish species, and six extinct in the wild fish species. [ 1 ] [ 2 ] Cartilaginous fish
Protosphyraena shared the Cretaceous oceans with aquatic reptiles, such as mosasaurs and plesiosaurs, as well as with many other species of extinct predatory fish. The name Protosphyraena is a combination of the Greek word protos ("early") plus Sphyraena , the genus name for barracuda , as paleontologists initially mistook Protosphyraena for an ...
WikiProject Fishes aims to help organise our rapidly growing collection of articles about fish taxa.Issues outside the scope of this WikiProject include fishkeeping (fish aquarium topics), fishing, fisheries, fish cuisine topics, fish farm topics, fish market topics, fish processing topics, fish product sales topics, fish products topics, and fish trap topics.
Polypterids are elongated fish with a unique series of dorsal finlets which vary in number from seven to 18, instead of a single dorsal fin.Each of the dorsal finlets has bifid (double-edged) tips, and are the only fins with spines; the rest of the fins are composed of soft rays.
One organization, however, the Linguist List, makes its assignments known publicly, using them primarily to refer to extinct languages (a class of languages that are often missing from the standard). The Linguist List's codes are not official ISO 639-3 codes, but are compatible with the official standard, and may be safely used as long as their ...
The fish has been bred in captivity since the 1970s. Thousands of individuals have been released into the Yangtze basin, but are apparently not breeding. Nevertheless, this restocking may be the only effort preventing the extinction of the species. [1]
Leedsichthys, a giant Jurassic pachycormid. This list of prehistoric bony fish is an attempt to create a comprehensive listing of all genera from the fossil record that have ever been considered to be bony fish (class Osteichthyes), excluding purely vernacular terms.