Adult channel catfish, Ictalurus punctatus, mature but do not ovulate and spawn in ponds in Korea. Ovulation and natural spawning were induced in the breeding season by increasing water temperature or injecting one to three doses of both 4.4 mg dried carp pituitary or 1,100 IU human chorionic gonadotropin(HCG) per kg body weight at 24 hours intervals when plural doses were employed. The increasing higher temperature (from $24^{circ}C$ to $30^{circ}C$) resulted in 4 times greater ovulation than lower increase of temperature (from $24^{circ}C$ to $27^{circ}C$). In overall performance, dried carp pituitary gave $78.6\%$ ovulation and HCG induced $66.6\%$ ovulation. None of the control fish spawned in any of the experiments.