Sardine
Sardina pilchardus
What to check for
Location
Cantabrian Sea and Atlantic Iberian waters
Technical location
Atlantic, Northeast, Bay of Biscay (South), Portuguese Waters (East)
Caught by
Net (purse seine or ring)
Rating summary
Sardine in the Cantabrian Sea and Atlantic Iberian waters is abundant, however fishing pressure is above target levels. There is partially effective management in place, however catches have exceeded advice in recent years. Sardine in the area is caught by purse seine, this method of fishing is unlikely to cause habitat impacts and bycatch is low.Rating last updated August 2025.
Technical consultation summary
Sardine in the Cantabrian Sea and Atlantic Iberian waters is abundant SSB in 2024 was 423,634 tonnes, well above MSY Btrigger 252,523 tonnes and the GFG proxy for BMSY (353,532t). However, fishing mortality (F) in 2024 (0.104) has increased to above FMSY (0.092) and 1.1 FMSY (0.101), therefore fishing is above sustainable levels. There is partially effective management in place but not all appropriate measures are in place. There have been recent improvements to the population status and reduced fishing pressures, and a precautionary management plan is in place. Catches continued against zero catch advice in 2018 and 2019 and significantly exceeded advice in 2020. Total catch is expected to exceed advice in 2024. There is no international TAC in place. Minimum legal size (11cm) is smaller than length at fist maturity (average 14.8cm), offering limited protection to juveniles. Sardine in the area is caught by purse seine, this method of fishing is unlikely to cause habitat impacts and bycatch is low.
How we worked out this Rating
Sardine in this region are not overfished, however fishing pressure is above target levels.Stock assessments are carried out annually by the International Council for the Exploration of the Sea (ICES). The most recent assessment was published in 2024 using data up to 2024. The next assessment is expected in 2025. The stock assessment defines reference points for fishing pressure (F) and biomass (B). For fishing pressure, there is a target to keep F at or below Maximum Sustainable Yield (MSY). For biomass, there is no target. However, there is a trigger point (MSY BTrigger). Below this level, F should be reduced to allow the stock to increase. The sardine population (or stock) experienced a large decline between 2006 and 2015. After a period of prolonged collapse (2010-2018) the population has since recovered and is now at safe biomass levels and fishing pressure has declined towards sustainable levels in recent years.The populations spawning stock biomass (SSB) was estimated at 423,634 tonnes in 2024, well above the biomass trigger point (MSY Btrigger) of 252,523 tonnes and the GFG proxy for BMSY (353,532t), the stock has maintained around this level since 2020.Fishing pressure (F) in 2024 (0.104) was above Maximum Sustainable Yield (FMSY) (0.092). Therefore, fishing pressure is above target levels.ICES advises that when the MSY approach is applied, catches in 2025 should be no more than 40,073 tonnes. This is a slight increase in advice from the previous year due to good incoming recruitment in 2024.
Partially effective management is in place for sardine in this region. Catches have exceeded advice in recent years.Sardine in this area is jointly managed by Spain and Portugal, and national measures and effort limitations have significantly reduced fishing mortality. There is currently no international Total Allowable Catch (TAC).A Management Plan (MP) for the period 2021–2026 was agreed between Portugal and Spain. ICES evaluated the plan and found it to be precautionary with maximum allowed catches between 30,000 and 50,000 tonnes. Since 2021, total catch has been in line with advised catch levels, however, the 2023 catch (47,973 tonnes) exceeded advice by 9% and the the 2024 catch assumption (46,095 tonnes) exceeds advice by 18%. Therefore, recent catches are not following advice. Predating the updated MP, in 2018 and 2019 advice was for zero catch, this advice was flouted, and the fisheries continued to fish for sardine; landing 15,062 tonnes in 2018 and 13,760 tonnes in 2019. Regulation measures in both Spain and Portugal for the fishery include:Minimum landing sizes (as detailed below)Specifications for design and use of fishing gearsMinimum mesh sizes for netsClosed seasonsA Minimum Conservation Reference Size (MCRS), i.e., minimum catch size, of 11 cm in place for sardine caught in European waters, which provides some protection to immature fish. Sardine taken below the length at fist maturity (average 14.8cm) would likely not have had the chance to reproduce.Discarding in this fishery is negligible. The EU and UK both have fishery management measures, which can include catch limits, population targets, and gear restrictions. However, compliance in the EU and UK has been inconsistent, with ongoing challenges in implementing some regulations. The goal of reaching Maximum Sustainable Yield (MSY) by 2020 was missed, with less than half of UK TACs in 2024 following ICES advice. In 2024, the EU and UK reaffirmed their commitment to sustainable fisheries by aligning management with scientific advice to gradually approach MSY. However, no new target date has been set for achieving MSY across all fisheries. The Landing Obligation (LO), an EU law retained by the UK post-Brexit, requires all quota fish to be landed, even if unwanted (over-quota or below minimum size). It aims to encourage more selective fishing methods, reduce bycatch, and improve catch reporting. However, compliance is poor, and accurate discard levels are hard to quantify with current monitoring programmes. The UK is in the process of replacing the LO with country-specific Catching Policies. The Marine Conservation Society views Remote Electronic Monitoring (REM) with cameras is one of the most cost-effective tools for providing reliable fisheries data and aiding informed management decisions. Fully monitored fisheries enhance collaboration, data accuracy, stock recovery, and reduce impacts on marine wildlife and habitats. However, the full potential of REM may only be achieved when it tracks fishing location and documents catch and bycatch, particularly where vulnerable species and habitats are at risk. As of January 2024, the EU is introducing a Remote Electronic Monitoring (REM) mandate for EU vessels, including CCTV cameras on vessels 18m or more that pose a potential risk of non-compliance, within the next 4 years. Across the UK, different approaches to REM are being taken and legislation is expected to be in place across all 4 countries within the next few years. The Marine Conservation Society is keen to see publicly available Fishery Management Plans for all commercially exploited stocks, especially where stocks are depleted, that include: An overview of the fishery including current stock status, spatial coverage, current fishing methods and impacts Targets for fishing pressure and biomass, and additional management when those targets are not being met, based on the best scientific evidence Timeframes for stock recovery Improved data collection, transparency, and accountability, supported by technologies such as Remote Electronic Monitoring (REM) Consideration of wider environmental impacts of the fishery, including habitat impacts and minimising bycatch Stakeholder engagement
Sardine in this area is caught by purse seiners. This method of fishing is unlikely to cause seabed impacts and has low risk of bycatch of unwanted species.Sardines are a small schooling fish found in coastal shelf waters, mainly at depths above 150m. They form dense schools (or shoals) in pelagic waters which, in this region, are targeted by Spanish and Portuguese purse seine fishers.A purse seine is a large net used to surround a school (or shoal) of fish, mid-water. This method of fishing is very species selective. Fishers can identify target species by shape and behaviour with echo sounders and sonar. They can also aim to select the size of fish caught by picking a certain section of the shoal (e.g., larger fish are normally located on the outside of the shoal). Very occasionally some larger non-target fish or cetaceans may get encircled in the net but can usually be released by ‘dipping’ the float line and allowing them to swim out with limited loss of the target species. If the catch is the wrong species or size, the whole catch can be released unharmed before hauling.This method of fishing has minimal seabed impacts as the net does not come into contact with the seabed. Very occasionally the net may lay on the seafloor in shallow water, but as the net is not towed or dragged this should have little impact.The overall impact of the sardine fishery on the pelagic ecosystem in this ecoregion has not been evaluated. Sardine has been found to be important in the diet of many cetacean species, notably common dolphins. As with many other pelagic species, sardine, due to a high dependency on lower trophic levels, can be highly vulnerable to changes in plankton community, environmental conditions, and climate change.UK regulations to reduce the impacts of fishing on marine habitats and wider species are under development, in the meantime most EU regulations have been adopted. Under EU legislation, bycatch species should be managed within scientifically defined or, where data isn’t available, suitability precautionary sustainable exploration limits. If stocks fall below a certain threshold, measures can be brought in such as gear limitations (e.g., mesh size or depth of use), time and/or areas closures, and Minimum Conservation Reference Sizes (MCRS).
References
COUNCIL REGULATION (EC) No 850/98 of 30 March 1998 for the conservation of fishery resources through technical measures for the protection of juveniles of marine organisms. Available at https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:01998R0850-20150601&qid=1463153613173&from=EN [Accessed 08.01.2024]ICES, 2024. Bay of Biscay and the Iberian Coast ecoregion – Ecosystem overview. In Report of the ICES Advisory Committee, 2024. ICES Advice 2024, Section 6.1, Available at: https://doi.org/10.17895/ices.advice.27899889 [Accessed on 28.07.2025]. ICES, 2024. Working Group on Southern Horse Mackerel, Anchovy and Sardine (WGHANSA). ICES Scientific Reports. 6:46. Available at: https://doi.org/10.17895/ices.pub.26003356 [Accessed on 28.07.2025]. ICES, 2024. Sardine (Sardina pilchardus) in divisions 8.c and 9.a (Cantabrian Sea and Atlantic Iberian waters). In Report of the ICES Advisory Committee, 2024. ICES Advice 2024, pil.27.8c9a. Available at: https://doi.org/10.17895/ices.advice.25027496 [Accessed on 28.07.2025]. ICES, 2023. EU additional request on mitigation measures to reduce by-catches of common dolphin (Delphinus delphis) in the Bay of Biscay. In Report of the ICES Advisory Committee, 2023. ICES Advice 2023, sr.2023.01. Available at: https://doi.org/10.17895/ices.advice.21946634 [Accessed on 28.07.2025].ICES, 2023. Stock Annex: Sardine (Sardina pilchardus) in divisions 8.c and 9.a (Cantabrian Sea and Atlantic Iberian waters). ICES Stock Annexes. Report. Available at: https://doi.org/10.17895/ices.pub.24772089.v1 [Accessed on 28.07.2025].MMO, 2025. Statutory guidance: Minimum Conservation Reference Size (MCRS) in UK waters. Updated 14 February 2025. Available at https://www.gov.uk/government/publications/minimum-conservation-reference-sizes-mcrs/minimum-conservation-reference-sizes-mcrs-in-uk-waters [Accessed on 28.07.2025].Republica Portuguesa and Gobierno de Espana, 2018. Multiannual Management and Recovery Plan for the Iberian Sardine (2018-2023). Available at https://www.bd-afl.net/Mutua_docs/SARDINHAPlano-de-Gestao-final.pdf [Accessed 02.01.2024]Seafish, 2025. Gear: PS - Purse seine. Available at https://www.seafish.org/responsible-sourcing/fishing-gear-database/gear/ps-purse-seine/ [Accessed on 28.07.2025].Silva, A., Santos, M.B., Caneco, B., Pestana, G., C. Porteiro, C., Carrera, P., Stratoudakis, Y., 2006. Temporal and geographic variability of sardine maturity at length in the northeastern Atlantic and the western Mediterranean, ICES Journal of Marine Science, Volume 63, Issue 4, Pages 663–676, https://doi.org/10.1016/j.icesjms.2006.01.005
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