Atlantic cod aquaculture has struggled with welfare and production challenges. Understanding the specific needs of this species guides more welfare-appropriate management as the industry develops.
Atlantic cod aquaculture welfare illustrates the difficulty of applying intensive farming to a species with ecology poorly suited to captive conditions. Cod are territorial, aggressive, cannibalistic predators whose social dynamics in captive settings result in persistent welfare problems from dominant fish injuring smaller tank-mates. The industry's persistent challenges with disease, aggression management, and production consistency reflect in part the welfare cost of keeping animals in conditions incompatible with their behavioral needs. More welfare-appropriate cod culture would involve lower densities that reduce aggressive interactions, careful size-grading to maintain cohort homogeneity, and management that minimizes handling stress from the species' particularly pronounced stress response. The welfare case for cod aquaculture development depends partly on whether it actually reduces wild cod fishing pressure or simply adds production alongside continued wild catch.