finfish

or fin fish

[fin-fish]
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.

Origin of finfish

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