Catch-and-Release Fishing Welfare: Minimizing the Welfare Cost

Catch-and-release fishing is widely promoted as sustainable but has significant welfare implications for fish. Evidence-based practices minimize stress, injury, and post-release mortality while allowing recreational fishing to continue.

Key Facts

Post-release mortality in catch-and-release fishing ranges from near-zero to 90% depending on species, conditions, and technique
Air exposure exceeding 60 seconds significantly increases post-release mortality in most fish species
Barbless hooks cause less injury and enable faster release with lower stress than barbed hooks
Deep hooking (swallowing hook into gut or gills) causes near-100% mortality if hook is removed and 60% if line is cut instead
Water temperature affects catch-and-release welfare: fish caught in warm water have higher post-release mortality due to oxygen depletion
Handling with wet hands rather than dry reduces scale and slime coat damage significantly
Keepnets cause welfare harm through crowding stress, injury, and delayed release — wetted rubberized nets for brief holding are preferred

Welfare Considerations

Catch-and-release fishing carries a welfare cost that is frequently underestimated. The common assumption that released fish swim away unharmed is contradicted by post-release mortality data showing significant death rates, particularly in stressed, air-exposed, or deeply hooked fish. Given that fish sentience is increasingly supported by evidence, minimizing the welfare cost of fishing is an ethical obligation, not merely a conservation consideration. Best practices — barbless hooks, minimal air exposure, wet hands, avoiding warm water, and cutting line rather than removing deep hooks — can reduce post-release mortality dramatically. Angler education on these practices is the most tractable welfare improvement for this enormous sector.

What You Can Do

Use barbless hooks for all catch-and-release fishing
Minimize air exposure — target under 30 seconds, never exceed 60 seconds
Handle fish with wet hands and never squeeze around the body
Cut the line rather than removing a deep hook — the fish has a much better chance of survival
Avoid fishing during warm water periods when post-release mortality is highest