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Percidae Genus Level Identifiers
Genus Etheostoma (darters)- 1-2 anal fin spines. Body variable, although not as elongate as Ammocrypta. Caudal fin emarginate, rounded, or truncate. Males often very colorful. Most species are sexually dimorphic (either pattern and/or color).
Genus Perca (yellow perch)- 2 distinctive anal fin spines. Forked caudal fin. Overall body size much larger than darter taxa. Color bronze or yellowish with dark saddles fading ventrally.
Genus Percina (darters)- 2 anal fin spines. Adults often larger and more robust than Ammocrypta. Generally elongate, but not as thin as Ammocrypta.
Genus Sander (sauger and walleye)- 2 poorly developed anal fin spines. Caudal fin forked. Bright coloration absent. Body size the largest of the perch genera.