Barramundi (Asian sea bass) is a popular aquaculture species farmed across Southeast Asia and Australia. Understanding and improving welfare in barramundi production benefits both fish and consumers.
Barramundi farming raises welfare concerns at multiple production stages. Cannibalism among juveniles requires size-grading to reduce losses, a process that itself causes handling stress. High stocking densities common in commercial operations limit normal swimming behavior and increase injury risk. Oxygen depletion events during hot weather cause mass mortality and severe suffering. Crowding at harvest, inadequate stunning, and slow killing by asphyxiation remain widespread problems. Positive welfare improvements include maintaining appropriate stocking densities, ensuring robust aeration systems, using electrical or percussive stunning before slaughter, and training staff in low-stress handling. Consumer demand for certified humane barramundi can drive industry improvements.