The European Pilchard, which is also widely known as the Sardine, is undoubtedly the most iconic small pelagic fish of the Mediterranean. It is a foundation species in the marine ecosystem, serving as a primary food source for countless predators and a nutritional treasure for humans. It is famous for its rich flavour and high content of Omega-3 fatty acids.

The body is elongated but taller and more laterally compressed than that of the European Anchovy, with which it is often confused. The colour on its back is an intense blue-green, while the sides and belly are silver. The most characteristic feature that distinguishes it from the anchovy is its head. The European Pilchard has a small, normal mouth that ends before the eye, and its lower jaw protrudes slightly upward. Additionally, there are characteristic bony ridges on the gill cover that look like rays.

This is a purely pelagic species that lives in the open sea. It forms massive, dense schools that can consist of thousands or even millions of individuals, which move in synchrony to confuse predators. It exhibits strong vertical migration behaviour. During the day, it descends to greater depths, usually between 25 and 55 metres, though it can reach 100 metres for safety. At night, it rises en masse towards the surface to feed.

The animal is a classic filter feeder. It swims with its mouth open while constantly filtering the water through its gills, which function like a sieve. It feeds mainly on zooplankton such as copepods and fish eggs, as well as phytoplankton, depending on the season and food abundance.

Fisheries & Economic Value

It is one of the most important commercial catches by volume for regional fisheries. The main method of capture involves purse seines. Vessels use powerful searchlights at night to exploit the natural tendency of fish to rise to the surface and be attracted to light, gathering the school before surrounding it with nets.

Although it has a low price per kilogram due to high supply, its nutritional value is priceless. It is rich in protein and is one of the best natural sources of omega-3 fatty acids. In the kitchen, it is extremely popular, especially when grilled over charcoal or salted, while representing one of the most classic local delicacies.

The International Union for Conservation of Nature classifies the European Pilchard as a species of Least Concern. However, scientific studies have shown that its populations exhibit strong fluctuations due not only to fishing but also to environmental factors such as temperature and currents that affect plankton abundance. Furthermore, research has observed competition and alternation in abundance with the European Anchovy: when conditions favour the pilchard, anchovy abundance decreases, and vice versa.