Largemouth belong to a group commonly referred to as Black Bass, a group that also includes Smallmouth, Spotted, Kentucky, Shoal, and a seemingly growing list of minor subspecies. Sunfish, Blue Gill, Bream, Black Bass, and another group of fishes called Pygmy Bass all belong to the family Centrarchidae. White bass belong to the Family Moronidae, commonly referred to as Temperate Bass or Sea Bass. One of the three species has misleading common name of White Perch, oddly enough. Funny thing, Up here, a common name for white perch is "Silver Bass." All the previous groups are in a larger grouping of Perciformes, or perch-like fish. A largemouth bass is most certainly a "bass." Calling largemouth bass a sunfish would be like calling a lemur an ape.