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Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Shifting fish populations can change where Mediterranean fisheries find fish and what they are able to catch, but the available regional evidence does not show that those changes have caused a particular rise in retail seafood prices. The clearest picture comes from keeping three things separate: recorded catches, modeled future catch potential, and what shoppers pay in a specific market.
What the latest production figures say
The General Fisheries Commission for the Mediterranean (GFCM), in its 2025 State of Mediterranean and Black Sea Fisheries assessment, reports 1,117,700 tonnes of capture fisheries landings in 2023. It separately reports 940,000 tonnes of marine and brackish aquaculture production that year. These figures cover the Mediterranean and Black Sea region and describe different sources of seafood: wild capture and farmed production.
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That distinction matters when considering availability. Aquaculture contributes a substantial quantity of regional production, but it is not a measure of wild fish populations or fishing catches. Nor do regional production totals show how much of any species was available at a particular shop or in a particular country.
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1Repair Windows errors before they cause bigger problems2Fix the driver behind crashes, sound loss and screen glitches3Clear out junk files and repair common Windows errorsAre Mediterranean fish moving, and what could that mean for catches?
Projections for demersal species
A 2022 study in Scientific Reports modeled the future distributions of eight commercially valuable demersal species—fish that live on or near the seabed. In the study’s underlying context, those species accounted for more than 32 percent of total Mediterranean landing value. Under the climate scenarios modeled, the species’ Mediterranean ranges contract, with a general displacement toward northern European coasts.
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This is a scenario-based projection, not evidence that all Mediterranean fish are currently moving north or that every local fishery will lose catches. The projection concerns eight species, and outcomes vary by species and modeled conditions. The study also does not establish what consumers will pay for those fish.
Catch potential is not recorded catch
A separate 2023 modeling study projects changes in potential catch that differ by fishing gear and region. Under a high-emissions scenario, it projects decreases in parts of the southeastern Mediterranean. Catch potential estimates what fisheries might be able to catch under modeled conditions; it is not a record of actual landings. Neither measure is a retail-price series.
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Observed changes in the temperature profile of catches
ISPRA, Italy’s environmental protection and research institute, reports that the mean thermal affinity of catches by Italian fleets increased across several sea divisions. Its indicator compares average periods, rather than showing a smooth year-by-year trend:
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| Italian fleet division | 1987–1996 average | 2013–2023 average |
|---|---|---|
| Adriatic | 19.2°C | 20°C |
| Ionian Sea–Central Mediterranean | 20.3°C | 22.2°C |
| Sea of Sardinia–Western Mediterranean | 20.5°C | 22.5°C |
These are ISPRA’s averages for the thermal affinity of Italian fleet catches, not direct measurements of water temperature or of fish abundance. ISPRA cautions that individual-year fluctuations can reflect factors other than climate change. The indicator is evidence of changing catch composition; by itself, it does not identify climate as the sole cause or establish a price or availability outcome.
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Why the effects differ among places and fisheries
The Mediterranean is not one uniform fishing ground. The GFCM reports that small pelagics—the smaller fish that often swim in open water—dominate many landings, while species composition differs among the Black Sea, Adriatic, and western, central, and eastern Mediterranean. A regional total can therefore mask changes in a particular country, port, species, or fleet.
That is visible in the GFCM’s comparison of two-year averages. Regional landings were similar across the periods, even as catches in Italy and Spain fell:
| Measure | 2020–2021 average or comparison | 2022–2023 average or comparison |
|---|---|---|
| Regional landings | 1,056,600 tonnes per year on average | 1,053,100 tonnes per year on average |
| Italian catches | Comparison-period baseline | 9% lower than in 2020–2021 |
| Spanish catches | Comparison-period baseline | 11% lower than in 2020–2021 |
The percentages are changes between the two cited two-year periods, not annual declines. Similar regional averages do not mean catches were stable everywhere or for every species.
Fishing pressure and management also influence what fisheries land. In the GFCM’s 2025 assessment, 52 percent of assessed stocks were overexploited in 2023. The same assessment describes a decade of falling fishing pressure and improving indicators. Together, those findings show why population shifts should not be treated as the only influence on supply: stock condition and management matter alongside changing environmental conditions.
A Mediterranean fisheries risk assessment identifies warming, extreme weather, and changes in vertical stratification—the layering of water by temperature and density—as leading risk drivers. It assesses the southeastern Mediterranean as a higher-risk area for fisheries resources and livelihoods. That regional variation is another reason not to assume a single effect across the whole basin.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Does this mean Mediterranean seafood will become more expensive?
Not on the evidence available here. The regional assessment and climate studies describe production, stock status, landings, and modeled catch potential; they do not provide a current, comparable series of retail prices and shelf availability by species and country. They also do not estimate how much shifting fish distributions contribute to retail price changes.
A projected change in catch opportunity cannot be translated directly into a price at the counter. Retail prices concern a particular species, market, and date, and require market evidence of their own. Regional landing totals and the value ranking of landed species are not substitutes for consumer-price data.
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The GFCM identifies sardine, deep-water rose shrimp, European hake, European anchovy, and common octopus among commercially important Mediterranean species by landing value. That ranking describes the value of landings, not current shop prices, future availability, or a recommendation to substitute one species for another.
To assess what is available to buy, shoppers need information tied to the market and date in question, including the species and origin. A regional climate projection cannot establish whether a particular fish is in stock at a local retailer.
Quick Recap
How to read claims about fish supply
- Check whether the figure is observed or modeled. Landings are recorded production; catch potential and future ranges are model outputs under specified scenarios.
- Check the geography and species. A basin-wide result does not describe every subregion, fleet, or fish.
- Keep capture and aquaculture separate. Farmed production adds to regional supply but is not a wild-catch measure.
- Look for local retail evidence before drawing a price conclusion. Landings, modeled catch changes, and landing value do not establish a consumer price effect.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
