Wild Salmon Welfare in River Fisheries: Catch-and-Release Ethics and Practice

Catch-and-release salmon angling causes varying degrees of welfare harm. Evidence-based practices minimise stress, injury, and post-release mortality for returned fish.

Key Facts

Atlantic salmon caught by angling experience handling stress, oxygen depletion, and physical injury
Post-release survival rates vary from near 100% with best practice to 50% or lower with poor handling
Air exposure is the primary welfare risk — even 30 seconds out of water significantly impairs recovery
Barbless hooks reduce handling time and physical injury compared to barbed hooks
Water temperature above 20°C dramatically reduces salmon survival after catch-and-release
Proper fish-in-water handling techniques reduce stress and improve survival significantly

Welfare Considerations

Catch-and-release welfare is about the quality of the return, not just the act of releasing. A salmon returned after prolonged air exposure in warm water, exhausted from a lengthy fight, is a salmon with a high probability of post-release mortality — making the "release" a delayed kill with additional preceding suffering. Evidence-based catch-and-release practices — short fights using appropriate tackle, immediate water-based unhooking without handling or photography, avoiding air exposure, and cessation of fishing when water temperatures exceed safe thresholds — genuinely improve welfare and survival. Anglers who take welfare seriously produce better conservation outcomes as well as better individual fish welfare.

What You Can Do

Use barbless hooks to reduce injury and handling time during salmon catch-and-release
Keep fish in the water during unhooking — avoid all air exposure
Stop fishing for salmon when river temperatures exceed 18-20°C
Support organisations developing and promoting welfare-positive catch-and-release protocols
Monitor fish for stable swimming before releasing — disorientated fish benefit from assisted recovery