3a. (From 1b.) Dorsum with series of wavy, parallel dark lines extending from behind head to caudal peduncle where both sides joined; predorsal scale rows usually 14 to 16.
common shiner
Luxilus chrysocephalus chrysocephalus

3b. (From 1b.) Dorsum with series of straight, parallel dark lines extending from behind head to caudal peduncle where both sides joined; predorsal scale rows usually 13 to 14.
common shiner
Luxilus chrysocephalus isolepis