Atlantic cod aquaculture has been attempted across the North Atlantic but faces significant challenges. Welfare issues including aggression, disease susceptibility, and poor adaptation to captive conditions have limited commercial success.
Atlantic cod welfare in aquaculture is shaped by the species' poor adaptation to crowded captive conditions. Cannibalism requires frequent size-grading, causing repeated acute stress. High disease rates in intensive systems reflect chronic immune suppression from crowding stress. Cod show strong escape responses and food-anticipatory behaviour indicating stress in high-density systems. The commercial failure of cod aquaculture means the worst welfare conditions are now limited to small-scale research and boutique production rather than industrial scale — but welfare standards for this species remain underdeveloped. Wild cod recovery through fisheries management and marine protected areas offers a better pathway to sustainable cod availability than intensive aquaculture that struggles to meet basic welfare standards. Any expansion of cod aquaculture should be accompanied by species-specific welfare protocol development before scaling.