Aquaculture

Farmed Atlantic Halibut Welfare

Halibut farming is an emerging sector with specific welfare challenges related to this flatfish species unique biology.

Key Facts

Halibut are large flatfish that can grow to 200 kg in the wild
Metamorphosis from larval to juvenile form involves eye migration and is a welfare-sensitive period
High light levels stress halibut which prefer dimmer conditions
Stocking density must be carefully managed to prevent chronic stress

Welfare Considerations

Farmed halibut experience welfare challenges at multiple life stages. Larval metamorphosis is a physiologically stressful period where inappropriate conditions increase mortality. Adult halibut prefer low light conditions, and bright lighting in some facilities causes chronic stress. Handling during grading and health checks causes acute stress requiring careful management.

What You Can Do

Support aquaculture research into halibut welfare requirements
Choose certified halibut where welfare standards are documented
Advocate for flatfish-specific welfare guidelines
Prefer farmed over wild halibut from well-managed operations