European Sea Bass Welfare 2025: Farm Standards Update

A 2025 update on European sea bass (Dicentrarchus labrax) welfare standards in Mediterranean aquaculture, including certification progress and priority welfare issues.

Key Facts

European sea bass (Dicentrarchus labrax) production in Mediterranean aquaculture exceeds 230,000 tonnes annually — Greece, Turkey, and Spain are the largest producers.
Sea bass welfare standards are less developed than for salmon — no equivalent to the RSPCA Assured framework exists for sea bass in Mediterranean production.
The ASC is expanding its sea bass certification scheme — by 2025, ASC-certified sea bass accounts for approximately 15% of Mediterranean production, up from under 5% in 2020.
Priority welfare issues identified by the 2024 EFSA sea bass opinion include: infectious disease outbreaks (VNN, sea lice), stocking density management, and inhumane slaughter methods.
Viral nervous necrosis (VNN) is the most significant disease welfare concern — it causes neurological signs, hemorrhage, and high mortality in affected sea bass; vaccination programs are reducing its impact.
Live transport of sea bass for tasting and inspection at sea is a welfare concern — fish transported while conscious experience significant stress; standardized handling protocols reduce this impact.
Consumer demand for certified sea bass is growing in northern European markets — ASC certification with welfare metrics is the primary market-driven welfare improvement mechanism.

Welfare Considerations

European sea bass welfare is improving but remains significantly behind salmon in terms of certified production and regulatory oversight. Consumer demand for ASC-certified sea bass in UK and northern European markets is the most powerful market lever for improving standards. Advocate for Mediterranean aquaculture welfare regulation aligned with EFSA scientific opinion recommendations.

What You Can Do

Choose ASC-certified sea bass where available — certification uptake rewards producers investing in welfare
Advocate for EU aquaculture regulations that implement EFSA sea bass welfare opinion recommendations
Support Aquatic Life Institute's Mediterranean aquaculture welfare standard development work
Reduce sea bass consumption from non-certified sources where welfare-audited alternatives are available