finny

Etymology

From fin + -y.

adj

1. (of a fish) Having one or more fins.
   The finny trophies he brought back in the form of numerous fat pickerel were ample evidence of his fishermanship. 1928, RG&E News, volume 16, page 334
2. Resembling a fin.
3. Abounding in fishes.
   1730–1774, Oliver Goldsmith, Introductory to Switzerland Cheerful at morn, he wakes from short repose, Breathes the keen air, and carols as he goes; With patient angle trolls the finny deep, Or drives his venturous ploughshare to the steep;