Wild Salmon Restocking Welfare | Animal Welfare Hub

Salmon restocking programmes raise welfare questions about the genetic fitness of hatchery fish, the welfare of rearing conditions, and post-release survival compared to wild-born fish.

Key Facts

Hatchery salmon are used to supplement declining wild populations in many rivers
Hatchery fish show genetic and behavioural differences affecting post-release survival
Overcrowding in hatcheries causes welfare problems including fin damage and stress
Post-release survival of hatchery salmon is generally lower than wild-born fish
Conservation restocking differs from put-and-take angling restocking in its objectives

Welfare Considerations

Salmon restocking welfare involves both the welfare of fish during hatchery rearing and the welfare implications of releasing fish with reduced fitness into challenging wild environments. Hatchery conditions produce fish behaviourally and physiologically different from wild-born salmon in ways that reduce post-release survival. Conservation focus on habitat restoration has the strongest evidence for genuine population recovery and addresses both welfare and conservation more effectively than restocking.

What You Can Do

Support wild salmon habitat restoration rather than hatchery supplementation
Advocate for evidence-based restocking evaluation including post-release survival monitoring
Follow Salmon and Trout Conservation research on effective salmon population recovery
Engage with river catchment management partnerships working on habitat restoration