Welfare of Farmed Shrimp in Southeast Asia

Southeast Asia produces over 60% of global farmed shrimp, with welfare concerns about stocking density, water quality, disease management, and the slaughter methods used at harvest.

Key Facts

Thailand, Vietnam, and Indonesia collectively produce over 2 million tonnes of farmed shrimp annually
Shrimp farming stocking densities in intensive systems can reach 300-500 animals per square metre in super-intensive designs
Early Mortality Syndrome caused by Vibrio bacteria has devastated shrimp farms across Asia since 2010, with mass mortality events affecting billions of individual animals
Shrimp are typically killed by chilling in ice slurry, a method whose welfare implications for crustaceans are actively debated
Nociceptors have been identified in shrimp, and they show avoidance learning, suggesting pain-relevant processing
The ASC shrimp standard covers environmental performance but includes minimal specific welfare requirements beyond reducing handling stress

Welfare Considerations

Farmed shrimp welfare is an area of genuine scientific uncertainty combined with enormous scale. Billions of individual animals are produced annually in conditions where chronic crowding, water quality fluctuation, and disease episodes cause measurable physiological stress. Whether shrimp experience subjective suffering remains contested, but the precautionary welfare case for improving conditions is strong given the scale involved. Slaughter by ice chilling may cause slow cold-immobilisation that is potentially distressing; alternative electrical or carbon dioxide stunning methods are available but rarely used at commercial scale in shrimp aquaculture.

What You Can Do

Choose ASC certified shrimp or shrimp from producers with documented welfare standards
Advocate for shrimp welfare criteria to be included in aquaculture certification standards
Support research into shrimp pain and stress biology to clarify the welfare case
Reduce consumption of shrimp from uncertified intensive sources
Engage with retailers about their shrimp supplier welfare standards and monitoring