Farmed Mackerel Welfare: Pelagic Fish and Harvest Ethics

Atlantic and Pacific mackerel are among the most heavily harvested pelagic fish globally, with welfare during mass capture and processing deserving greater attention.

Key Facts

Global mackerel catch exceeds 5 million metric tons annually from wild fisheries
Mackerel are fast-swimming, schooling fish with sophisticated collective movement coordination
Purse seine capture causes crowding, pressure damage, and prolonged suffocation death
Mackerel are highly sensitive to temperature changes and rapidly deteriorate post-capture
They are rich in omega-3 fatty acids, making them both nutritionally valuable and ecologically important as prey

Welfare Considerations

Wild-caught mackerel welfare is shaped by the capture method — purse seine nets concentrate large numbers of fish in progressively smaller spaces, causing physical injury and suffocation over many minutes. Rapid chilling methods that reduce time to death are more feasible at scale for mackerel than for some other pelagic species due to their high value and cold-chain infrastructure. Reducing indirect welfare impact by decreasing mackerel-based fishmeal use in aquaculture is also a meaningful intervention.

What You Can Do

Choose mackerel from fisheries with Marine Stewardship Council certification for sustainability
Support research into rapid chilling or other mass-slaughter welfare improvements for pelagic fish
Advocate for inclusion of capture methods in seafood sustainability and welfare rating systems