Below are possible answers for the crossword clue To do with a fin on a fish.
6 letter answer(s) to to do with a fin on a fish
DORSAL
belonging to or on or near the back or upper surface of an animal or organ or part; "the dorsal fin is the vertical fin on the back of a fish and certain marine mammals"
facing away from the axis of an organ or organism; "the abaxial surface of a leaf is the underside or side facing away from the stem"
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