any of various fishes having a yellow or yellowish tail: as a: any of several carangid fishes (genus Seriola); esp: a sport fish (S. lalandei) of the California coast and southward that reaches a length of about three feet (one meter) b: silver perch a c: a common snapper (Ocyurus chrysurus) that is a sport and food fish of the tropical western Atlantic and West Indies and is olive above and broadly striped with yellow along the sides and on the tail--called also yellowtail snapper |