Of all the darter species, the most tolerant of diverse conditions. F. A nest site is prepared by turning upside down and rubbing the area with the caudal, anal and pelvic fins, while balancing with the aid of the pectorals. Gravid females are approached with fins lowered and are led beneath the rock where nest polishing is resumed. The female may then join the male, head to head, and deposit 30 to 200 eggs in the nest. Females may lay 5 or 6 egg clutches, and males sometimes accumlate a thousand or more eggs from several females.
Males then guard the eggs until hatched.
Often goes unseen until it darts away.