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cavefish

[keyv-fish] /ˈkeɪvˌfɪʃ/
noun, plural (especially collectively) cavefish (especially referring to two or more kinds or species) cavefishes.
1.
any of several fishes that live in cave waters, as species of the genus Amblyopsis, having no body pigment and rudimentary, functionless eyes.
Origin
1870-1875
1870-75; cave + fish
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for cave fish

cavefish

/ˈkeɪvˌfɪʃ/
noun (pl) -fish, -fishes
1.
any of various small freshwater cyprinodont fishes of the genera Amblyopsis, Chologaster, etc, living in subterranean and other waters in S North America See also blindfish
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Encyclopedia Article for cave fish

any of the pale, blind, cave-dwelling fishes of the genera Amblyopsis and Typhlichthys, family Amblyopsidae. Cave fishes are small, growing to about 10 cm (4 inches) long, and are found in fresh water in dark limestone caves of the United States. There are three species: Typhlichthys subterraneus, Amblyopsis rosae, and A. spelaea. The first two lack pelvic fins; the third, the blind fish of Mammoth Cave, Kentucky, possesses these fins. All have small but nonfunctional eyes, and tactile organs that are sensitive to touch; these are arranged over the body, head, and tail and enable the fish to feel what it cannot see. Contrasting with these fishes are the swampfish (Chologaster), which belong to the same family. They are also small but are pigmented and have functional eyes. They live above ground in North American swamps and streams.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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