Farm Animals

Farmed Salmon Sea Lice Treatment Welfare

Sea lice treatments in salmon aquaculture cause significant welfare impacts, and the search for less harmful methods is an active research area.

Key Facts

Sea lice infestations are the most costly health problem in Atlantic salmon farming
Chemical treatments including hydrogen peroxide and emamectin can cause harm to salmon
Mechanical treatments such as hydrolicer and thermolicer cause acute stress and injury
Cleaner fish such as wrasse are used as biological controls but face their own welfare challenges
Breeding for lice-resistant salmon is a long-term solution being pursued

Welfare Considerations

Sea lice and their treatments both compromise salmon welfare. The industry must invest in less harmful treatment methods and prevention strategies to meaningfully improve fish welfare.

What You Can Do

Support aquaculture certification schemes that address sea lice welfare
Advocate for research into gentler lice treatments and resistant breeding
Choose salmon from farms with transparent welfare and lice management reporting
Support welfare standards for cleaner fish used as biological controls
Engage with the sustainable seafood debate around salmon farming practices