Key to the Species of Cyprinella

3a. (From 2a.) Body generally slender and terete; body deep relative to body length; fins of breeding males and females yellow or blue and with or without dark blotches on membranes.

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3b. (From 2a.) Body generally deep and laterally compressed; body deep relative to body length; fins of breeding males and females red or orange and without dark blotches on membranes.
red shiner

Cyprinella lutrensis