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Check the exact species, where it was caught or farmed, and how it was produced—then compare those details with a current seafood guide for the market and fishery concerned. “Mediterranean” or a familiar species name alone is not enough to establish that a particular product is sustainable.
What to check on the seafood label
For seafood sold in the EU, consumer-facing information for relevant products includes the commercial name and scientific name, whether it was caught or farmed, the catch area or country of aquaculture production, and the fishing gear category where applicable. Product types and legal exceptions affect which details must appear. Outside the EU, check the rules where you are shopping; EU requirements do not automatically apply elsewhere.
For wild-caught seafood, lot-level fisheries-control information can also include a lot identifier, vessel identity, species code, catch date, quantity, supplier, and consumer information. For aquaculture, the corresponding production-unit identity and production date may be relevant. See the EU’s consolidated fisheries control rules dated 10 January 2026 for the applicable requirements.
- Species: note both the commercial designation and scientific name. Common names can refer to different species, and sustainability assessments are not interchangeable.
- Origin: record the catch area for wild seafood or the farming country for aquaculture. A broad “Mediterranean” description may not identify the stock or farm assessed by a guide.
- Production method: distinguish wild-caught from farmed, then identify the fishing gear or farming system if the information is available.
How to judge whether a particular product is sustainable
Use a current seafood guide for the country where you are buying, and match its advice as closely as possible to the product’s species, area, and method. Ratings can differ within a species and change over time. WWF France says its assessments consider stock status in a FAO fishing area, environmental effects of the fishing or farming method, and the effectiveness of management in that area; see its Consoguide poisson.
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When comparing products, check the stock or farm, origin, method, management, habitat effects, bycatch, and risks to vulnerable species. Do not assume that wild-caught seafood is automatically preferable to farmed seafood—or vice versa. Both can have environmental impacts that depend on how and where they are produced.
Fishing gear is one factor, not a shortcut to a verdict. The Marine Stewardship Council (MSC) says, “There is no universally accepted rule for ‘sustainable fishing gear types.’” Its guidance stresses that impacts depend on the location, target species, ecosystem, and responsible management; see MSC FAQs.
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What MSC and ASC labels mean
The MSC blue fish label applies to wild-caught seafood from fisheries independently assessed against the MSC standard. MSC assessments cover fish-stock health, ecosystem impacts, and management. The label also depends on chain-of-custody certification by businesses in the supply chain.
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MSC does not certify farmed fish. Its FAQs identify the Aquaculture Stewardship Council (ASC) as a farmed-seafood certification route, addressing matters such as fish health and welfare, water quality, biodiversity, and community engagement. A certification is evidence about a defined fishery or farm and traceable product chain—not a blanket endorsement of every fish of that species.
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Certification is voluntary, and coverage varies. A product without a certification label is not automatically unsustainable; assess its actual source and production details instead.
Check protections and size rules before buying
Avoid protected or threatened seafood. WWF Italy specifically advises against protected species such as date mussels and warns about sharks, rays, and threatened species in its responsible-consumption guidance. Protections and conservation status can depend on the species and jurisdiction, so verify the current rules where you are shopping.
EU law sets minimum conservation reference sizes for specified marine species and regional technical measures, including a Mediterranean annex. The applicable size depends on the species, area, current rules, and any relevant national measures; there is no single minimum size for all Mediterranean seafood. Check Regulation (EU) 2019/1241, consolidated text dated 1 January 2026, alongside current local requirements.
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Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteA legal minimum is not proof that a fish has reached reproductive maturity or that its fishery is sustainable. WWF Italy cautions that legal minimum sizes and sizes at reproductive maturity do not always match. Size rules are one conservation check, not a substitute for checking the stock, method, and management.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.A practical comparison when you have several choices
- Write down the exact species. Use its commercial and scientific names.
- Record the source. For wild catch, note the catch area; for farmed seafood, note the production country.
- Identify the method. Check the gear or farming system, not just whether the product is wild or farmed.
- Look up that combination in a current local guide. Follow advice for the closest available match in species, area, and method.
- Check risks and rules. Consider stock status, management, habitat effects, bycatch, protected-species rules, and applicable size or season requirements.
- Use certification as additional evidence. Confirm whether MSC or ASC applies to the product’s production method and traceable supply chain.
- Vary your choices. WWF recommends diversifying rather than concentrating demand on a few popular species, while still checking the source of each choice.
Why the exact source matters
Mediterranean fisheries and aquaculture are a substantial, varied source of seafood, but regional totals do not tell you whether an individual product is a good choice. WWF Italia reported nearly 2 million tonnes of Mediterranean and Black Sea fisheries and aquaculture production in 2021: 1,063,000 tonnes from fisheries and 870,000 tonnes from aquaculture. Those figures describe total production, not the status of a particular stock or farm.
For regional fisheries information, the FAO General Fisheries Commission for the Mediterranean describes its biennial State of Mediterranean and Black Sea Fisheries as an authoritative reference based on information from member countries and scientific bodies. Use stock-level details—not a regional production total—to assess a product’s origin.
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