Fish Stocking and Angling: Welfare Considerations in Recreational Fishing

Recreational angling is one of the most popular outdoor activities globally, involving millions of fish annually. The welfare science of fish pain and stress is reshaping how the sport is practiced.

Key Facts

An estimated 700 million people engage in recreational fishing globally — one of the most popular outdoor activities
Catch-and-release fishing has grown substantially as an alternative to killing fish caught recreationally
Research shows that fish experience physiological and behavioral stress responses during capture and handling
Barbless hooks reduce injury and enable faster, less traumatic release compared to barbed hooks
Water temperature above the thermal tolerance of species increases catch-and-release mortality significantly
CO2 fish stocking for put-and-take fisheries involves crowded, stressful transport conditions affecting fish welfare
Hook injuries, air exposure, and handling cause measurable welfare harm even when fish survive release

Welfare Considerations

Recreational fishing welfare science has advanced significantly in the past decade, and the evidence increasingly challenges some standard practices. Fish caught on hooks experience a stress response with measurable physiological components — cortisol elevation, behavioral changes, and immune suppression — that persist for hours after release. Air exposure during unhooking and photography causes significant additional stress and, at warm water temperatures, can be lethal. The welfare case for catch-and-release is stronger than for catch-and-kill if handling is minimized and fish are returned quickly, but it is not a no-welfare-cost practice. The most welfare-conscious anglers minimize handling time, use barbless hooks, and avoid fishing when water temperatures compromise fish recovery.

What You Can Do

Use barbless hooks for catch-and-release fishing to minimize injury and enable faster unhooking
Minimize air exposure during unhooking and release — keep fish in the water and release immediately
Avoid catch-and-release during extreme heat when water temperatures compromise fish recovery
Learn to revive exhausted fish properly before releasing — hold facing into current until actively swimming
Engage with local angling clubs and organizations to advocate for welfare-conscious fishing practices
Reduce recreational fishing overall or shift to plant-baited catch-and-release to reduce individual fish welfare impacts