Channel catfish aquaculture is the largest finfish farming industry in the United States. Welfare standards have improved but significant challenges remain.
Channel catfish welfare challenges center on pond oxygen management, disease prevention, and handling during harvest. Hypoxic episodes cause significant pre-mortality suffering — fish gasping at the surface, loss of equilibrium, and slow asphyxiation. Early detection systems and emergency aeration equipment have reduced but not eliminated these events. Columnaris disease causes visible ulceration and significant morbidity across pond populations. Harvest involves crowding and handling stress that can be minimized through careful seine netting practices and prompt processing.