The science of salmon stress responses has advanced significantly, providing validated welfare indicators that can be used to assess and improve conditions across commercial salmon farming.
Salmon welfare science has produced a toolkit of validated welfare indicators that can guide commercial practice improvements. Cortisol measurement, behavioral observation, and physiological assessment allow welfare to be quantified rather than assumed. The challenge is translating this science into commercial practice — welfare assessment requires investment in monitoring infrastructure that many producers resist without regulatory or market incentives. Consumer demand for welfare-certified salmon and regulatory requirements for welfare monitoring create the incentives needed to drive science adoption into commercial management. The science is mature enough to support practical welfare improvement; what remains is the economic and regulatory will to implement it.