Channel catfish farming in the US South is a major aquaculture sector, with welfare challenges centered on pond oxygen management, disease pressure, and the welfare of fish during harvest and transport.
US channel catfish welfare is shaped by the specific challenges of warm-water pond aquaculture in a region with hot summers and frequent oxygen depletion risk. The welfare consequences of dissolved oxygen crashes are severe: fish experiencing hypoxia surface and gulp air in distress, and if emergency aeration is not deployed promptly, mass mortality occurs under conditions of considerable suffering. Disease outbreaks cause chronic illness and death in fish that show behavioral signs of reduced activity and feeding consistent with aversive states. Harvest seining creates crowding conditions that elevate stress, and transport at high densities to processing plants represents the final welfare challenge in the production cycle. Improved harvest and transport protocols that maintain dissolved oxygen, reduce physical trauma, and minimize transit duration substantially reduce welfare compromise during this high-risk period of the production cycle.