cave fish

cavefish

[keyv-fish]
noun, plural (especially collectively) cavefish (especially referring to two or more kinds or species) cavefishes.
any of several fishes that live in cave waters, as species of the genus Amblyopsis, having no body pigment and rudimentary, functionless eyes.

Origin:
1870–75; cave + fish

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World English Dictionary
cavefish (ˈkeɪvˌfɪʃ)
 
n , pl -fish, -fishes
See also blindfish any of various small freshwater cyprinodont fishes of the genera Amblyopsis, Chologaster, etc, living in subterranean and other waters in S North America

Collins English Dictionary - Complete & Unabridged 10th Edition
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Encyclopedia Britannica
Encyclopedia

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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