noun. marine fishes with a flattened elongated body and a sucking disk on the head for attaching to large fish or moving objects.
1. Adjective The little suckerfish you buy at the pet shop might be only 3 inches long, but he can grow as large as 24 inches. 2. Noun, singular or mass As long as you find a little left in the morning, you can be assured that your suckerfish is getting enough to eat.