Barramundi (Asian sea bass) is one of the fastest-growing aquaculture species globally. Its welfare in intensive tropical pond and cage systems raises important questions about a rapidly expanding industry.
Barramundi welfare presents challenges typical of predatory fish in captivity: aggression, cannibalism and the mismatch between intensive housing and natural ranging behaviour. The species' aggressive temperament means that stocking density management is both a production and welfare concern - overcrowding causes injury through cannibalism and fin damage. Recirculating aquaculture systems offer improved water quality control but do not eliminate behavioural welfare problems. As barramundi aquaculture expands globally to meet demand for premium seafood, welfare standards development needs to keep pace with production growth. The premium positioning of barramundi as a high-value seafood provides commercial justification for welfare investment.