Hybrid fishes occur naturally and are raised in hatcheries. Many hybrids have lower fertility but seem to exhibit better growth rates and catchability than the parent species.
Three species of bullhead catfishes occur in Oklahoma and Texas: black bullhead, yellow bullhead, and brown bullhead. Bullheads provide many hours to enjoyment to anglers, especially beginning fishermen. However, they compete directly with channel catfish and sometimes cause water turbidity problems.