Aquaculture Welfare

Salmon Welfare at Sea Cage Density

Stocking density in sea cage salmon farming affects behavior, aggression, fin damage, and chronic stress indicators.

Key Facts

Higher stocking densities are associated with increased cortisol, fin erosion, and eye injury
Optimal density for salmon welfare is lower than current commercial stocking in many systems
Density effects interact with water flow, oxygen, and feeding management
Welfare assessment during production should include density-sensitive indicators
Regulatory limits on stocking density are more conservative in some countries than others

Welfare Considerations

Stocking density is one of the most directly controllable welfare parameters in sea cage salmon farming. The evidence consistently shows that lower densities improve welfare indicators - a relationship that regulatory standards and certification should enforce.

What You Can Do

Support salmon certification requiring lower stocking densities
Advocate for science-based stocking density standards in aquaculture welfare regulations
Purchase salmon from producers with transparent stocking density and welfare indicator reporting