Pacific white shrimp is the world's most farmed crustacean, with intensive production raising significant welfare questions about sentience, crowding, and disease.
The welfare of farmed shrimp remains one of the most debated questions in animal welfare science. While shrimp have less complex nervous systems than vertebrates, research documents nociceptive responses and avoidance learning that some scientists interpret as evidence of pain capacity. Eyestalk ablation, performed without anaesthesia to accelerate spawning in broodstock, is a procedure causing tissue damage and potentially pain. Extreme crowding in intensive ponds may cause chronic stress. Disease outbreaks cause mass mortality. A growing body of expert opinion supports applying precautionary welfare principles to shrimp production given the enormous numbers involved. Several certification schemes are beginning to include basic shrimp welfare criteria.