Farmed Halibut Welfare in Aquaculture

The specific welfare challenges of Atlantic halibut aquaculture and improvements being developed.

Key Facts

Atlantic halibut is a high-value flatfish species with a growing aquaculture industry in Norway and Canada
Halibut are the largest flatfish species, reaching over 300 kg, with complex early life history requirements
Early larval rearing is technically demanding and involves high mortality rates that represent welfare concerns
Juvenile halibut require sand or gravel substrate for resting and burying behavior in captivity
Cannibalism is a welfare problem in intensive halibut production without adequate space and feeding management
Halibut show strong site fidelity and may experience chronic stress in tank environments without appropriate substrate

Welfare Considerations

Halibut aquaculture welfare presents species-specific challenges related to their flatfish biology and benthic lifestyle. Wild halibut spend much of their time resting on the seafloor, and captive environments without appropriate substrate prevent this fundamental behavior. Cannibalism in poorly managed groups causes injuries that compromise individual welfare substantially. Improving halibut welfare requires species-specific housing standards including substrate provision, stocking density limits based on welfare outcomes, and feeding management that prevents competition-driven injury. The relatively small scale of the industry has meant less welfare research investment than salmon, creating knowledge gaps that limit welfare improvement.

What You Can Do

Choose halibut from certified aquaculture operations with documented welfare standards
Support aquaculture welfare research specific to flatfish species including halibut
Advocate for species-specific welfare standards in aquaculture certification covering flatfish
Ask retailers about the aquaculture welfare standards of halibut products they source