Which freshwater fish is known for making a drum-like sound with its swim bladder?

The freshwater drum is known for making a drum-like sound with its swim bladder.

Its scientific name is Aplodinotus grunniens, and it is the only member of the family Sciaenidae that spends its entire life in freshwater. The species is native to river and lake systems of North and Central America, including the Great Lakes and the Mississippi basin.

Male freshwater drum can produce a low-pitched croaking or drumming sound by vibrating muscles against the swim bladder. The sound is especially associated with spawning behavior, although the exact use of the calls can vary. The swim bladder therefore helps with sound production as well as buoyancy.

Freshwater drum are silvery fish with a deep, laterally compressed body and a rounded snout. Their common name can cause confusion with red drum and black drum, which are mostly marine or estuarine relatives. Freshwater drum are also called sheepshead in some regions, but that name is shared by several unrelated fishes and can create identification mistakes.