Wild Atlantic Salmon Welfare and Population Collapse

Wild Atlantic salmon populations have collapsed across much of their range, with individual fish facing multiple welfare challenges throughout their life cycle.

Key Facts

Wild Atlantic salmon returns to UK rivers have declined by 70% since 1970
Sea lice from fish farms parasitise wild salmon smolts migrating past cage sites
Warming rivers reduce oxygen levels and increase pathogen loads affecting salmon welfare
Hydroelectric dams and weirs block migratory routes causing fish stress and mortality
Catch-and-release fishing practices cause physiological stress even when fish survive

Welfare Considerations

Wild Atlantic salmon face multiple welfare stressors throughout their complex life cycle. Juveniles in rivers experience warming temperatures, reduced oxygen, predation, and competition. Sea lice from aquaculture parasitise migrating smolts, causing skin lesions and osmotic stress. Adults face obstacles including dams, weirs, and deteriorating river conditions during upstream migration. Spawning and post-spawning is energetically extreme. Population collapse means fewer individuals experience successful reproduction, representing both conservation and individual welfare failure.

What You Can Do

Support river restoration projects removing obsolete weirs and improving fish passage
Advocate for strict sea lice management requirements near wild salmon migration routes
Practice catch-and-release carefully using barbless hooks and minimal handling time
Support riparian habitat restoration projects improving river conditions for salmon