Measuring salmon welfare requires validated operational indicators that farms can assess routinely. Science-based welfare metrics are transforming salmon aquaculture standards.
Salmon welfare assessment has advanced from general production metrics to validated direct welfare indicators. Eye opacity from cataracts, fin erosion, external wounds, and behavioral abnormalities like surface rolling can all be scored quickly to assess welfare state. These indicators are actionable — farms receiving poor scores can implement specific management changes. The development of automated computer vision systems that continuously monitor fish behavior represents a significant advance, enabling real-time detection of welfare events rather than periodic manual assessment. Progressive salmon producers are integrating these metrics into daily management.