Seabream and Seabass Aquaculture Welfare

Gilthead seabream and European seabass are major Mediterranean aquaculture species facing welfare challenges from sea cage crowding, parasite burden, and inhumane slaughter practices.

Key Facts

Mediterranean aquaculture produces over 200,000 tonnes of seabream and seabass annually
Greece and Turkey are the largest producers, using open sea cage systems
Sea lice and monogenean parasites cause significant welfare problems in cage-reared fish
Chronic crowding stress suppresses immune function and increases disease susceptibility
Starvation before harvest to clear gut contents adds additional welfare costs
Ice slurry remains the dominant slaughter method despite welfare concerns

Welfare Considerations

Seabream and seabass farmed in Mediterranean sea cages face multiple overlapping welfare challenges. Parasite infections, particularly from monogenean flatworms, cause gill damage, respiratory distress, and reduced feeding. High stocking densities increase social stress and aggression, leading to fin and scale damage. Starvation periods of 24-48 hours before harvest cause hunger stress. Slaughter by ice slurry causes prolonged conscious suffering - fish remain responsive for many minutes. Electrical stunning prior to slaughter is the recommended humane alternative but is not yet standard practice in most Mediterranean facilities.

What You Can Do

Ask retailers about welfare standards and slaughter methods for Mediterranean farmed fish
Support the Aquatic Life Institute's campaign for humane slaughter standards
Advocate for EU aquaculture welfare regulations to mandate electrical stunning
Choose seafood certified by schemes with meaningful fish welfare criteria
Raise questions with supermarkets about species-specific welfare in their sourcing
Donate to fish sentience and welfare research to build the evidence base