European seabass is a premium aquaculture species raised across the Mediterranean, with growing research attention to welfare across production phases from larvae to harvest.
European seabass welfare research has accelerated as the species has gained economic importance. Seabass are active predatory fish with high swimming capacity — standard net pen systems restrict movement significantly compared to wild ranging. Acute welfare challenges arise during grading, sampling, vaccination, and harvest — all involving out-of-water handling and handling stress. The stress physiology of seabass is well-documented; cortisol responses are substantial and sustained following routine procedures. Slaughter welfare has received particular attention, with research establishing that electrical stunning achieves rapid insensibility more reliably than CO2 immersion. Social management is complicated by the tendency for dominant individuals to suppress feed access for subordinate fish at high densities. Overall, seabass welfare science is more advanced than for many other Mediterranean species, though implementation of welfare standards in production systems lags behind research evidence.