North American Continent Sunfish, all belong to a large group that, depending on the region are called; Bream, Brim, copper nose.
Botanically this genius is refereed to as...
Kingdom: Animalia (Animal)
Phylum: Chordata (Vertebrates)
Class: Actinopterygii (Ray-fin fish)
Order: Perciformes (Perch like in shape)
Family: Centrarchidae (Fliers)
Genus: Lepomis (genus name in larger family grouping)
Species: 12 species in the Lepomis genus, 4 subspecies.
L. auritus: Redbrest Sunfish
L. cyanellus: Green Sunfish
L. gibbosus: Pumphinseed Sunfish
L. gulosus: Warmouth Sunfish
L. humilis: Orangespotted Sunfish
L. macrochirus: Bluegill Sunfish
L. macrochirus purpurescens: Florida Bluegill Sunfish
L. macrochirus ssp: Handpainted Bluegill Sunfish
L. marginatius: Dollar Sunfish
L. megalotis megalotis: Central Longear Sunfish
L. megalotis peltastes: Northern Longear Sunfish
L. megalotis ssp: Ox-bow Longear Sunfish
L. microlophus: Redear Sunfish
L. minatus: Redspotted Sunfish
L. punctatus: Spotted Sunfish
L. symmetricus: Banturn Sunfish
Black Bass also belong to the Centrarchidae Family, but they are a different Genus (Micropterus)
source: http://en.wikipedia.org/wiki/Lepomis