Killifish Family 11. Perch Family 13. Sculpin Family 23. They characteristically hover for long periods with pulsating pectoral fins. The redside dace is one of the most distinctive minnows with a very large, upturned mouth.
Males have a large scarlet red patch on each side.
The speckled chub, like the darters, has a poorly developed swim bladder and spends most of its time on the bottom. Colors are lacking in this almost translucent fish, but the body is covered with pronounced speckles. The hornyhead chub was named for the hornlike tubercles the males develop in the spring. Juveniles have fin colors ranging from scarlet-red to pink. The red shiner is one of the hardiest minnows in North America, and is very tolerant of pollution, turbidity, and temperatures approaching 100 degrees F. Males have red or orange fins, and blue metallic-like bodies.