US catfish aquaculture uses large earthen ponds with management practices that significantly affect fish welfare. Dissolved oxygen, stocking density, and harvest methods are key welfare parameters.
Catfish pond welfare challenges reflect the difficulty of managing welfare in open-water production systems. Dissolved oxygen fluctuations create welfare emergencies that require rapid response - fish experiencing oxygen depletion show air-gulping behavior at the pond surface indicating severe physiological stress. Seine net harvest concentrating tens of thousands of fish into small areas causes crowding stress that can be measured through cortisol elevation and behavioral indicators. The transition to electrical stunning before processing represents the most impactful available welfare improvement at slaughter. Consumer awareness of catfish welfare conditions is essentially nonexistent, limiting market-driven improvement. Regulatory engagement through USDA catfish inspection oversight provides a potential welfare lever that does not exist for other farmed fish species.