0 used to describe something, especially a fish, that has a fin (= a thin vertical part sticking out from the body) or that looks like a fin:
Game refers to wild animals, either furred, feathered, or finny, that are pursued for sport and whose flesh is edible.
They call on anglers to end the suffering of our finny friends by laying down their rods and reels.
We have this vision of suburban America where everything's new and clean, the houses in rows, the sprinklers sprinkling, the cars all shiny and finny.
The "mermaid" dancers wear tight, shiny skirts with finny ruffles at the ankle.