Maximum stocking density certification for farmed salmon is one of the most impactful welfare standards available, with measurable benefits for fish health and behaviour.
Stocking density is one of the most powerful levers available in salmon welfare improvement. The physiological and behavioural evidence is clear: fish at high density experience chronic stress, compete aggressively for space, and develop injuries from fin biting and crowding-related abrasion. Conversely, fish at lower certified densities show measurable welfare improvement across multiple indicators. The economic trade-off — lower density means less fish per unit of water — is real but manageable when certification premium pricing reflects the true cost of welfare-positive production. Consumer willingness to pay modest premiums for certified welfare salmon is the market signal that makes lower density economically viable for producers.