Key to the Species of Notropis

30a. (From 29a.) Lateral stripe extending across side of head, around snout and lips, covering both lips and chin; mouth black inside; anteriorly, lateral line without "stitched" pattern; breeding adults with pale orange on body and dorsal and caudal fins.
ironcolor shiner

Notropis chalybaeus

30b. (From 29a.) Lateral stripe extending across face but not around snout and lips; mouth without black pigment inside; anteriorly, lateral line scales with pigment, producing "stitched" pattern; breeding adults with iridescent blue, green, and red coloration; dorsal, anal, and pelvic fins with band of red, pink, or dusky coloration.
rainbow shiner

Notropis chrosomus