How to identify a Warmouth
It is a stocky, bass-like sunfish, and like the rock bass and the green sunfish, its body is slightly thicker and longer than most sunfishes. It can be distinguished from the rock bass by the presence of three spines. Of these three species, the warmouth is the only one that has teeth on the tongue. Its color ranges from olive to gray with mottling on the sides and back, and small spots on the dorsal and anal fins.
Where to catch Warmouth
The warmouth occurs in North America in the Great Lakes and Mississippi River basins from western Pennsylvania to Minnesota in the USA, and south to the Gulf of Mexico, the Atlantic and Gulf drainages from Rappahannock River in Virginia to Rio Grande in Texas and New Mexico. The following list includes additional details on where to catch this fish: