European sea bass is one of the most widely farmed fish in the Mediterranean. Intensive production creates welfare challenges that producers and certifiers are only beginning to systematically address.
Sea bass farming is largely invisible in welfare discussions dominated by salmon, yet it involves hundreds of millions of sentient fish subjected to intensive farming conditions. Sea bass are active predators that aggregate in schools — the crowded cage environment frustrates their natural behavior and drives chronic stress. The dense stocking common in Mediterranean cage farms causes physical damage (fin erosion, scale loss) and immune suppression that increases disease burden. Pre-slaughter handling — crowding, air exposure, transport — causes acute stress responses measurable as cortisol spikes and behavioral desperation. Improvements including lower stocking densities, electrical stunning before slaughter, and parasite management protocols exist but are not universally implemented. Consumer awareness of Mediterranean farmed fish welfare is low compared to salmon.