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Critically endangered (CR) species face an extremely high risk of extinction in the wild. As of July 2017, the International Union for Conservation of Nature (IUCN) listed 1,000 critically endangered fish species, including 87 which are tagged as possibly extinct. [1] [2] Of all evaluated fish species, 3.0% are listed as critically endangered ...
Endangered (EN) species are considered to be facing a very high risk of extinction in the wild. In September 2016, the International Union for Conservation of Nature (IUCN) listed 643 endangered fish species. [1] Of all evaluated fish species, 4.2% are listed as endangered. The IUCN also lists ten fish subspecies as endangered.
Ichthyomyzon argenteus (Kirtland 1838) The Ohio lamprey ( Ichthyomyzon bdellium) is a lamprey found in the Ohio River drainage basin in the United States and is a parasitic species of lampreys. They are considered to be an endangered /rare species in some states, due to siltation, pollution, and construction of dams .
Bigmouth buffalo
The banded sculpin ( Cottus carolinae) is a freshwater fish dwelling mostly in small to moderate sized streams in areas of swift current. Young and juvenile C. carolinae can mainly be found in pools, riffles, and other shallow habitats while adults tend to prefer deeper waters. C. carolinae primarily eats insects and insect larvae, but their ...
Diamond darter. The diamond darter ( Crystallaria cincotta) is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is named for the sparkling light it reflects during nighttime collections. [ 2]
Currently, 19 of the 20 states within the fish's original U.S. range list it as either threatened or endangered. [18] [19] It is considered "Vulnerable" by NatureServe. [4] This sturgeon is a valuable gourmet food fish, as well as a source of specialty products including caviar and isinglass. "In 1860, this species, taken on incidental catches ...
Columbus Zoo and Aquarium