Atlantic Mackerel: Welfare in Emerging Aquaculture

Key Welfare Facts

Atlantic mackerel are highly mobile schooling fish adapted to open-water environments with complex social behaviour.
Trials in circular tank and cage systems show extreme startle responses and wall-collision injuries at crowding.
Mackerel are obligate ram-ventilators requiring continuous swimming to ventilate gills, making containment challenging.
Starvation response is marked, with food deprivation causing rapid deterioration and welfare compromise.
Welfare indicators including eye haemorrhage, scale loss, and schooling disruption reveal stress in contained systems.
Species-specific welfare research for mackerel is minimal, limiting evidence-based aquaculture development.

Welfare Assessment

Atlantic mackerel pose significant welfare challenges in aquaculture due to their open-water adaptations and extreme stress responses. Substantial welfare research is needed before commercial-scale production is considered, and precautionary standards should be established first.

What You Can Do

Support investment in species-specific welfare research before mackerel aquaculture expands
Advocate for welfare assessment requirements in permitting processes for novel aquaculture species
Apply the precautionary principle to species whose welfare needs are poorly understood
Choose mackerel from sustainably managed wild fisheries where welfare science is better established