Micropterus is a genus of North American freshwater fish collectively known as the black bass, belonging to the sunfish family Centrarchidae of order Perciformes. They are sometimes erroneously called "black trout", but the name trout more correctly refers to certain members of the salmonid family.

Centrarchidae, better known as sunfishes, is a family of freshwater ray-finned fish belonging to the order Perciformes, native only to North America. There are eight universally included genera within the centrarchid family: Lepomis, Micropterus, Pomoxis (crappies), Enneacanthus, Centrarchus, Archoplites, Ambloplites, and Acantharchus. A genetic study in 2012 suggests that the highly distinct pygmy sunfishes of the genus Elassoma are also centrarchids.