Barramundi farming is expanding rapidly across Asia and Australia. Improving welfare standards in this sector requires attention to stocking density, water quality, and humane slaughter.
Barramundi welfare concerns centre on stocking density, water quality management, and slaughter practices. High densities cause chronic stress, fin damage from aggression, and elevated cortisol levels that compromise immune function. Poor water quality — particularly low oxygen or high ammonia — causes acute distress and chronic suffering. Sorting and grading procedures, which are frequent in barramundi farms to reduce size-based cannibalism, involve repeated handling stress. Slaughter methods vary widely: many farms use ice slurry, which provides inadequate stunning for this species. Percussive stunning or electrical stunning before killing dramatically reduces suffering at the end of life. Certification schemes are beginning to incorporate fish-specific welfare standards, but coverage of barramundi farms remains limited.