1) Finlike 2) Finned 3) Fishlike 4) Having fins 5) Like a fish 6) Like fish 7) Like minnows 8) Relating to fish 
• (a.) Having, or abounding in, fins, as fishes; pertaining to fishes. • (a.) Abounding in fishes.
Fin'ny adjective 1. (Zoology) Having, or abounding in, fins, as fishes; pertaining to fishes. 2. Abounding in fishes. « With patient angle trolls the finny deep.» Goldsmoth. 
pertaining to or abounding in fish. · having fins; finned. · finlike.