Catfish Aquaculture Welfare: A Global Perspective

Catfish are farmed in large numbers across Asia, Africa, and North America, with significant variation in welfare standards globally.

Key Facts

Channel catfish farming is the largest aquaculture sector in the United States by volume
African catfish and Pangasius (Basa) are major global species farmed at scale in Asia
Catfish tolerate relatively high stocking densities but crowding still causes chronic stress
Water quality — particularly dissolved oxygen and ammonia — is a critical welfare determinant
Catfish are air-breathers and can tolerate hypoxic conditions, but this does not mean hypoxia is welfare-neutral
Slaughter methods for catfish include electrical stunning, CO2 narcosis, and asphyxiation — welfare varies

Welfare Considerations

Catfish aquaculture spans diverse systems from extensive pond culture to intensive recirculating systems. Their physiological tolerance for poor conditions has sometimes been used to justify substandard husbandry, but tolerance of a stressor does not equate to absence of suffering. Research on catfish behaviour and stress physiology increasingly supports welfare consideration. High-density systems, poor water quality, and inhumane slaughter practices each contribute to negative welfare outcomes. Welfare-focused catfish production maintains optimal water conditions, appropriate densities, feeds consistently, and uses effective pre-slaughter stunning.

What You Can Do

Ask retailers about welfare standards in their catfish and Pangasius supply chains
Look for aquaculture certifications that include welfare criteria for the species purchased
Support research into catfish welfare and species-appropriate welfare indicators
Advocate for fish welfare regulations to cover catfish production in all major producing countries
Reduce consumption of catfish from unverified sources in regions with poor welfare oversight