Salmon welfare certification schemes vary enormously in the protections they require. Understanding what different labels mean helps consumers make genuinely welfare-positive purchasing choices.
The proliferation of salmon certification schemes has created consumer confusion rather than clarity. Not all labels represent equivalent welfare improvements, and some certifications focused on environmental sustainability provide minimal welfare protection. The single most meaningful welfare criterion for farmed salmon is stunning before slaughter — it determines whether fish experience the nociceptive stimuli of killing methods including live chilling or carbon dioxide stunning. RSPCA Assured currently represents the highest welfare standard available to UK consumers for this criterion. Stocking density requirements matter for chronic stress during grow-out — lower densities allow normal swimming behaviour and reduce aggression. Sea lice treatment welfare is largely unaddressed by certification schemes despite representing repeated acute stress events. Consumers seeking the best available welfare assurance should prioritise RSPCA Assured salmon and support policy advocacy for stronger baseline requirements across all schemes.