Key to the Species of Notropis

21a. (From 20b.) Anterior lateral line scale pores pigmented, producing "stitched" pattern; dorsal fin tip rounded, first ray rarely extending beyond tip of last ray when depressed; margin of anal fin straight; breeding adults with red coloration on head, body, and fins.
highland shiner
Notropis micropteryx

21b. (From 20b.) Anterior lateral line scale pores not pigmented; dorsal fin tip pointed, first ray extending well beyond tip of posterior ray when depressed; margin of anal fin concave; breeding adults without bright colors.
emerald shiner
Notropis atherinoides