European sea bass are active, territorial predatory fish whose welfare needs reflect their ecological biology - needs that commercial farming systems often inadequately address.
Sea bass welfare in commercial farming reflects the general problem of applying intensive production logic to fish species that evolved in different ecological contexts. Sea bass are not schooling fish by nature, and the high-density conditions of commercial cages cause territorial aggression, chronic stress, and physical damage. Their welfare requirements - appropriate density, water quality, and behavioral complexity - can be partially met in well-managed systems, but economic pressure toward higher densities consistently works against welfare. Certification schemes that specify density limits and water quality standards provide the market incentive to maintain welfare-appropriate conditions.