Farmed Cod and Haddock Welfare | Animal Welfare Hub

Farmed cod and haddock face distinct welfare challenges in cage and land-based aquaculture systems that are beginning to receive research attention.

Key Facts

Atlantic cod aquaculture declined sharply after early 2000s attempts but is being revisited using recirculating aquaculture systems (RAS)
Cod and haddock show pain responses, stress behaviours, and social hierarchy formation consistent with welfare-relevant sentience
Crowding stress in cod causes elevated cortisol, fin damage, and immune suppression
Cod are aggressive and cannibalistic at high densities, requiring careful stocking management
Land-based RAS allows more controlled conditions but requires high energy inputs and careful water quality management

Welfare Considerations

Cod welfare in aquaculture has received less research attention than salmon but presents comparable challenges. Cod are more aggressive than many other farmed species, and aggression-related injuries under crowded conditions are significant welfare issues. Land-based systems offer potential welfare improvements through environmental control, but only if management standards prioritise fish welfare alongside production efficiency.

What You Can Do

Choose farmed cod from certified producers with documented welfare standards and stocking density limits
Support research into cod welfare indicators and monitoring systems applicable to commercial aquaculture
Reduce overall cod consumption given the combined pressures on wild stocks and welfare challenges in farming
Ask seafood retailers about the sourcing and welfare standards of farmed white fish products they carry