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2 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

 E·the·os·to·moid a.  Zoöl. Pertaining to, or like, the genus Etheostoma. -- n. 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.
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From: WordNet (r) 2.0

 Percina tanasi
      n : 3-inch snail-eating perch of the Tennessee River [syn: snail
           darter]