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Cartilaginous fishes. Cartilaginous fishes include sharks, rays, skates, and shovelnose rays. The majority of the order Rhinopristiformes, which includes sawfish, guitarfish, wedgefish, and other shovelnose rays, is considered critically endangered, with 28 of its 64 evaluated species considered critically endangered by the IUCN.
The IUCN also lists ten fish subspecies as endangered. Of the subpopulations of fishes evaluated by the IUCN, 24 species subpopulations have been assessed as endangered. For a species to be considered endangered by the IUCN it must meet certain quantitative criteria which are designed to classify taxa facing "a very high risk of extinction". An ...
The giant pangasius, paroon shark, pangasid-catfish[1] or Chao Phraya giant catfish (Pangasius sanitwongsei) is a species of freshwater fish in the shark catfish family (Pangasiidae) of order Siluriformes, found in the Chao Phraya and Mekong basins in Indochina. Its populations have declined drastically, mainly due to overfishing, and it is now ...
Mekong giant catfish are one of the largest species of freshwater fish. In 2005, the Mekong giant catfish attained the Guinness World Record for the world's largest freshwater fish. [4][5] Attaining a length of up to 3 m (9.8 ft), the Mekong giant catfish grows extremely quickly, reaching a mass of 150 to 200 kg (330 to 440 lb) in only six ...
The number of fish species and subspecies to become endangered has risen from 40 to 61, since 1989. [11] For example, the Bigmouth Buffalo is now the oldest age-validated freshwater fish in the world, and its status urgently needs reevaluation in parts of its endemic range.
Native to North America, bigmouth buffalo are integral to ecosystems therein. [6] Bigmouth buffalo young are prey for several predatory fish, including walleye, [21] northern pike, [22] catfish, [23] [24] alligator gar, [25] [26] etc. Bigmouth buffalo filter-feed on invasive zebra mussels during the mollusk's larval planktonic stage.
Bonytail chub. The bonytail chub or bonytail (Gila elegans) is a cyprinid freshwater fish native to the Colorado River basin of Arizona, California, Colorado, Nevada, New Mexico, Utah and Wyoming in the southwestern United States; [2] it has been extirpated from the part of the basin in Mexico. [1] It was once abundant and widespread in the ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 21 July 2024. Species of fish American eel Conservation status Endangered (IUCN 3.1) Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Order: Anguilliformes Family: Anguillidae Genus: Anguilla Species: A. rostrata Binomial name Anguilla rostrata Lesueur ...
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