Atlantic halibut farming is a growing sector with unique welfare challenges related to the species' biology, metamorphosis, and sensitivity to handling and stocking conditions.
Halibut present distinct welfare challenges related to their biology and the relative immaturity of farming technology for this species. Their high sensitivity to handling, complex metamorphosis, and need for benthic contact are welfare requirements that farm systems must accommodate. Pigmentation abnormalities visible as pale patches on the dark upper surface indicate developmental problems linked to light exposure and diet, serving as visible welfare indicators. As halibut aquaculture expands, welfare standards developed for salmon are insufficient - species-specific research and regulations are needed.