The redbreast sunfish (Lepomis auritus) is a species of freshwater fish in the sunfish family (family Centrarchidae) of order Perciformes. The type species of its genus, it is native to the river systems of eastern Canada and the United States.
http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?id=201688&lvl=0