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noun Etheostomoid n. (Zoöl.) Any fish of the genus Etheostoma and related genera, allied to the perches; also called darter. The etheostomoids are small and often bright-colored fishes inhabiting the fresh waters of North America. About seventy species are known, including the rare snail darter (Percina tanasi), 3 inches long, found only in the Tennessee River and classified as a threatened species. See Darter.
Collaborative International Dictionary of English 0.48
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