Lepomis is a genus of freshwater fish in the sunfish family (family Centrarchidae) of order Perciformes. The type species is L. auritus, the redbreast sunfish. The species of this genus are known as common or eared sunfishes. The most recognizable of this genus is the Bluegill.
The common sunfishes, which grow to a maximum overall length of 12–40 cm (5–16 in), depending on species, are widely distributed throughout the lakes and rivers of the United States and Canada, and several species have been transplanted and flourished around the world, even becoming pests. (Trade in some Lepomis species is prohibited in Germany for this reason.) Many are sought by anglers as panfish, and large numbers are bred to stock lakes.