How to Identify Percidae

Key Identification Features

• The blackside darter, scientifically named Percina maculata (Girard, 1859), has distinct physical traits that set it apart.
• A key identifying feature is a side stripe formed by 6 to 9 separate black spots; additional black spots appear below the eyes and on the caudal fin.
• The belly is typically yellow or tan with dark blotches, and the base of the caudal peduncle and the caudal fin have a distinct B-shaped marking.

For instant identification in the field, use the iNature app — AI-powered, works offline.