Key to the Species of Cyprinidae
25a. (From 24b.) Dark, lateral stripe much wider than diameter of eye; stripe deepest above pelvic fins; dorsal, anal, and caudal fins of adults very colorful; dorsal fin expanded in some species.
Genus Pteronotropis
25b. (From 24b.) Lateral stripe, if present, equal to or less than diameter of eye, or no wider than 2 scale rows; fins of adults not noticeably enlarged but may be colorful.