Catch-and-Release Fishing: Welfare Evidence and Best Practices

Catch-and-release fishing is widely practiced as conservation-friendly recreation. The welfare implications for fish are real and can be minimized through evidence-based handling practices.

Key Facts

Catch-and-release fishing is practiced by millions of anglers as an alternative to harvest
Fish caught and released experience stress responses including cortisol spikes lasting hours after release
Hooking injuries, air exposure, and handling cause lactic acid buildup and physiological stress
Mortality rates from catch-and-release vary from near-zero to 30% depending on species, method, and conditions
Barbless hooks reduce hooking injuries and release time significantly
Air exposure above 30 seconds markedly increases mortality in many fish species
Water temperature is the strongest predictor of catch-and-release mortality — warm water sharply increases risk

Welfare Considerations

Catch-and-release fishing involves genuine welfare costs for fish — physiological stress that takes hours to resolve, hooking injuries, and risk of mortality from improper handling. These welfare costs are real and proportional to handling time, air exposure, water temperature, and injury severity. Best practice catch-and-release minimizes these costs: using barbless hooks to facilitate quick release, keeping fish in water throughout release, minimizing handling time to under 30 seconds, avoiding release in warm water (above 18°C for salmonids), and not fishing for exhausted fish. The welfare case is not necessarily against catch-and-release fishing but for handling practices that minimize suffering. Anglers who care about fish welfare can adopt evidence-based practices that dramatically reduce the welfare impact of their recreation.

What You Can Do

Use barbless hooks to reduce hooking injury and enable faster release
Keep fish in water during release — never expose fish to air for more than 30 seconds
Avoid catch-and-release fishing for salmonids when water temperatures exceed 18°C
Use net bags or cradles rather than bare hands to support fish during release
Advocate for fishing regulations that incorporate catch-and-release welfare standards