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finfish

or fin fish

[fin-fish]
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noun, plural (especially collectively) fin·fish, (especially referring to two or more kinds or species) fin·fish·es.
  1. a true fish, as distinguished from a shellfish.
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Origin of finfish

First recorded in 1685–95; fin1 + fish
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018