Green Bay, Wisconsin, USA - FishYellow Bullhead

Yellow Bullhead Variant Names: Polliwog, Chucklehead Cat
Description: Ameiurus means "primitive or curtailed" in reference to the notch in the distal end of the caudal fin, and natalis is Latin for "having large buttocks." Yellow bullheads are typically light yellow to olive-green on the back, often somewhat mottled. The belly is yellowish to white. The tail is not notched, and may be slightly rounded. Chin barbels are white. The anal fin has 23-27 rays.
Biology: During late spring or early summer, yellow bullheads excavate nests in mud bottoms and spawn. Both parents guard the nest, which may contain 2,000 to 12,000 eggs. In four to six days eggs hatch and fry begin to school in compact balls which are guarded by adults until individuals reach about one inch in length. Like the black bullhead, the yellow bullhead is omnivorous, feeding on a variety of plant and animal material, both live and dead. Immature aquatic insects and crustaceans often comprise a considerable proportion of the diet. Although yellow bullheads rarely achieve edible size, some individuals may exceed four pounds.