Aquaculture Welfare

Fish Welfare at Slaughter: Science and Standards

The current state of fish welfare science at slaughter and the standards emerging to protect fish.

Key Facts

Fish show stress and pain responses similar to mammals, including nociception and avoidance learning
Carbon dioxide stunning before slaughter is considered poorly humane due to evidence of prolonged distress
Percussive stunning or electrical stunning render fish immediately insensible when correctly applied
The RSPCA, GlobalG.A.P., and other certification bodies now include slaughter method requirements

Welfare Considerations

Fish welfare at slaughter has historically been neglected due to assumptions about fish sentience. Accumulating scientific evidence demands a precautionary approach - if fish can suffer, they deserve humane slaughter. Certification schemes are beginning to reflect this, but adoption remains incomplete.

What You Can Do

Choose fish certified by schemes that specify humane slaughter requirements
Advocate for mandatory pre-slaughter stunning in national aquaculture regulations
Support research into fish slaughter welfare across different species and systems