European sea bass (Dicentrarchus labrax) and gilthead sea bream (Sparus aurata) are the most commercially important farmed marine fish in the Mediterranean region, with combined annual production exceeding 600,000 tonnes. They are farmed extensively in Greece, Turkey, Spain, Italy, and Croatia in sea cage and land-based pond systems.
Both sea bass and sea bream demonstrate the behavioural and physiological complexity associated with sentience: conditioned learning, stress responses with physiological correlates, and avoidance behaviour in response to noxious stimuli. They are the subject of increasing welfare research, particularly in relation to crowding, handling, and slaughter.
EU aquaculture legislation and ASC certification are driving welfare improvements in Mediterranean bass and bream production. Key improvement areas: reducing crowding density, improving handling protocols, adopting humane slaughter methods, and developing species-specific welfare assessment tools. Consumer demand in Northern European markets for certified product creates economic incentives for adoption.