Tropical shrimp aquaculture produces millions of tonnes annually for global markets. Growing evidence of shrimp sentience makes improving welfare in this industry an urgent ethical priority.
Tropical shrimp aquaculture involves suffering at a scale difficult to comprehend — billions of individual animals experiencing conditions that welfare science increasingly suggests cause pain and distress. Eyestalk ablation, performed without anaesthetic to induce reproductive hormone release in broodstock females, is a painful mutilation with no welfare justification given that alternative methods (eyestalk conditioning) can achieve similar results. Overcrowding in intensive ponds causes chronic stress, aggression, disease susceptibility, and oxygen stress. At harvest, shrimp are typically killed by icing — a method that may not produce rapid insensibility. The industry's scale means even incremental improvements in welfare standards affect enormous numbers of animals. Consumer awareness and certification scheme pressure are beginning to drive change.