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Snail Darter

Percina tanasi (species)

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The snail darter (Percina tanasi) is a small 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 found in East Tennessee freshwater in the United States. First recorded in 1973, the snail darter was listed as endangered under the U.S. Endangered Species Act of 1973 by 1975 and was involved in a legal controversy leading to a Supreme Court ruling to halt the completion of Tellico Dam, which posed a risk of extinction for the snail darter by blocking its migratory route — see Tennessee Valley Authority v. Hill, snail darter controversy. In 1978, the U.S. Fish and Wildlife Service, Tennessee Valley Authority (TVA), and Tennessee Wildlife Resource Agency launched a…

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