How good are you at recognizing a fish by its scales? Clue: this one was found in a (big, international) grocery store.
I didn’t buy him, selecting instead from the tuna steak and sushi-grade salmon.
Identified on the sign as “yellow carp” my guess is this is Cyprinus carpio, and it was farm-raised. And if WikiPee has it right, this is on the “Worst Invasive Species” list. And, may I say, dead (so not invading). Supposed to be tasty stewed in red wine.