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cavefish

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

First recorded in 1870–75; cave + fish
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for cavefish

cavefish

noun plural -fish or -fishes
  1. any of various small freshwater cyprinodont fishes of the genera Amblyopsis, Chologaster, etc, living in subterranean and other waters in S North AmericaSee also blindfish
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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