Family Sciaenidae--Drum Family
These fishes are called "drum" or "croaker" due to their
ability to make sounds using the gas bladder. Drums have two
dorsal fins, a lateral line that extends to the end of the
caudal fin, thoracic pelvic fins and a body that is deep and
highly arched at the beginning of the dorsal fin.
freshwater drum--Aplodinotus grunniens