Farmed Halibut Welfare Challenges

Atlantic halibut farming is a growing sector with specific welfare challenges related to the unique biology and behavior of this large flatfish.

Key Facts

Atlantic halibut grow to over 200 kg and require years to reach market size
Halibut are bottom-dwelling fish that require tank designs accommodating their flatfish lifestyle
They are highly sensitive to light and require dim conditions for good welfare
High stocking densities cause competition and injury in halibut due to their territorial nature
Halibut aquaculture is expanding in Norway and Canada as salmon alternatives are sought

Welfare Considerations

Halibut welfare in aquaculture requires species-specific knowledge that is still being developed. Their flatfish biology means they need tank floor access and dim lighting conditions that standard salmonid tank designs do not provide. High stocking densities cause territorial aggression and injury. Rapid growth targets create pressure to maintain conditions that compromise welfare for productivity. As halibut aquaculture expands, establishing welfare standards based on the specific behavioral and physiological needs of this species — rather than adapting salmon standards — is essential.

What You Can Do

Choose halibut from certified operations with species-specific welfare standards
Support research into halibut behavioral needs and optimal tank design for welfare
Ask seafood suppliers about stocking density and lighting management in halibut farming
Advocate for species-specific welfare frameworks rather than generic standards for all flatfish species