Shrimp Welfare Science 2025: Evidence and Implications

Key Facts

• Global shrimp aquaculture produces approximately 5-6 million tonnes annually from ~500 billion individual animals
• 2025 research confirms shrimp show nociceptive responses, avoidance learning, and stress-related behavioral changes
• The neurological basis for shrimp pain is anatomically distinct from vertebrates but functionally analogous
• Eyestalk ablation — blinding female shrimp to stimulate reproduction — is condemned by welfare organizations but widely practiced
• Slaughter methods for shrimp (live boiling, ice immersion) are under increasing welfare scrutiny

Welfare Considerations

The 2025 shrimp welfare evidence base represents a significant advance in invertebrate welfare science. The evidence for nociception in decapod crustaceans has been progressively strengthening and is now considered sufficient by most major welfare science bodies to warrant protective consideration. The scale of shrimp aquaculture — hundreds of billions of animals — means even small improvements in individual welfare have enormous aggregate impact. Eyestalk ablation, practiced in most farmed shrimp species to induce reproductive maturation, is perhaps the highest-priority welfare issue given its direct and preventable harm. Consumer and certification pressure is beginning to drive alternatives.

What You Can Do

• Support certification schemes that prohibit eyestalk ablation in shrimp broodstock management
• Choose shrimp certified by schemes with welfare standards (ASC or equivalent) where available
• Advocate for research into eyestalk ablation alternatives as a funded priority in aquaculture welfare science
• Engage with retailers about their shrimp welfare sourcing commitments and timeline for improvement
• Support the Shrimp Welfare Project and similar organizations working directly with shrimp producers