Catch-and-Release Fishing and Fish Welfare

Catch-and-release fishing is widely practiced as a conservation measure, but its welfare implications for fish are increasingly scrutinized.

Key Facts

Catch-and-release is practiced by millions of anglers globally as a perceived conservation-friendly fishing approach
Fish experience physiological stress from hook injury, air exposure, handling, and exhaustion from fighting the line
Mortality rates after catch-and-release vary from under 5% to over 40% depending on species, temperature, and handling
Air exposure of even 30 seconds significantly increases post-release mortality in some species
Circle hooks cause less injury than J-hooks and reduce gut-hooking that causes most catch-and-release mortality
Water temperature above 20°C dramatically increases stress-related mortality in cold-water species like trout and salmon
The welfare debate around catch-and-release centers on whether brief stress justifies angling if fish are released

Welfare Considerations

Catch-and-release fishing welfare is contested at two levels: whether fish experience meaningful suffering from the process, and whether release justifies the welfare cost even if suffering occurs. Evidence of fish nociception and stress responses has strengthened the welfare concern. The practical welfare case focuses on minimizing harm through barbless hooks, minimal air exposure, cold water handling, and rapid release. Post-release mortality data shows that best-practice handling produces substantially better outcomes than careless practice. For anglers committed to catch-and-release, welfare-focused technique is both ethically important and practically achievable without sacrificing the recreational experience.

What You Can Do

Use barbless hooks to minimize injury during catch-and-release fishing
Minimize air exposure — keep fish in water as much as possible during release preparation
Avoid fishing in water above 20°C for cold-water species that have poor physiological tolerance for warm-water stress
Use strong enough tackle to land fish quickly — prolonged fights increase exhaustion and stress
Engage with the scientific evidence on fish welfare and let it inform your fishing practice