Percina macrocephala, also known commonly as the longhead darter, is a species of freshwater ray-finned fish, a darter in the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes, and pikeperches. P.... Wikipedia
Species: P. macrocephala
Class: Actinopterygii
Genus: Percina
Family: Percidae
Kingdom: Animalia
Order: Perciformes
Phylum: Chordata