Wildlife

Sea Trout: Coastal and River Welfare Concerns

Sea trout are the sea-run form of brown trout and face welfare challenges from coastal fish farming, pollution, and overfishing.

Key Facts

Sea trout are brown trout that migrate to sea to feed before returning to rivers to spawn
They are highly susceptible to sea lice from open cage salmon farms on coastal migration routes
UK sea trout populations have declined dramatically in some regions including west Scotland
Sea trout require high quality gravel rivers for spawning and stony streams for juvenile rearing
They can make multiple spawning migrations unlike salmon which usually die after their first

Welfare Considerations

Sea trout face welfare challenges similar to salmon but with greater vulnerability to coastal fish farm sea lice because their migration routes take them close inshore. Pollution of estuaries and coastal waters causes physiological stress. Intensive angling on rivers during upstream migration can cause injury and stress at a critical life stage. River barriers prevent access to spawning grounds.

What You Can Do

Support campaigns for effective sea lice treatment at salmon farms near sea trout migration routes
Join local river improvement associations that monitor and restore spawning habitat
Practice catch and release of sea trout especially early in the season
Support Environment Agency monitoring of sea trout populations in your local river
Advocate for estuary management that reduces pollution impacts on migrating fish