Also known as sheepshead, the freshwater drum is known for the rumbling and grunting sounds the males make to attract mates. It is a large, round-profiled, silver humpbacked fish.The freshwater drum is a rounded fish with a small tail and a silvery cast to its scales. Its mouth is located toward bottom of its face. It's the only freshwater fish on which the lateral line, a sense organ used to detect motion in the water, runs right through tail.Freshwater drum have particularly large otoliths,...