European sea bass farming is expanding rapidly, and welfare research is identifying key management factors that significantly affect fish welfare outcomes in sea cage and land-based systems.
Sea bass welfare in aquaculture depends heavily on stocking density and environmental quality. As a territorial species, sea bass show significant welfare impacts from overcrowding: increased aggression, fin damage, cortisol elevation, and immune suppression. These effects compound through a production cycle, meaning welfare problems that begin at stocking worsen over months. Responsible sea bass farming requires density management, adequate hiding structures, feed management that avoids extreme restriction, and humane slaughter protocols. Welfare science for sea bass is developing rapidly, driven by producer awareness that welfare and product quality are linked.