Is sardine a deep-sea fish? Let us guide you through its living habits

Sardines are very rich in nutrients, containing eicosapentaenoic acid, which can prevent cardiovascular disease, as well as nucleic acids, taurine, selenium and various other nutrients. Their medicinal value is very high, making them a treasure of medicine: they can prevent blood clots and have a special effect on treating heart disease. Let us take a look below at whether sardines are deep-sea fish!

Is sardine a deep-sea fish?

Sardines are deep-sea fish. Sardines are warm-water fish of coastal waters and are generally not found in the open sea or the ocean. They usually live in the middle and upper layers. In autumn and winter, adult fish live in deep water beyond 70-80 m; in spring, as coastal water temperatures rise, the schools make a spawning migration toward the shore; after the larvae and juveniles metamorphose, they grow while feeding along the coast; in summer they gradually migrate north with the warm current of the South China Sea; in autumn, as surface water temperatures drop, they migrate south. After October, when the fish have grown to more than 150 mm, they gradually move to deeper sea areas because coastal water temperatures fall.

What do sardines eat?

Sardines mainly feed on plankton, which varies with fish species, sea area and season, and adult fish and juvenile fish also differ. For example, adult goldstripe sardinella mainly feed on planktonic crustaceans (including copepods, brachyuran larvae, amphipods and mysids), and also feed on diatoms; juveniles feed on diatoms and dinoflagellates in addition to planktonic crustacean larvae. At night they are attracted to light, so fishermen generally use light purse seines, drift gillnets, large haul nets and set nets to catch them.

What common deep-sea fish are there?

Sea fish are divided into deep-sea fish, coastal fish and cold-water fish; for example, Norwegian salmon is a fish of cold deep-sea waters. Deep seas have less pollution, most deep-sea fish grow naturally, and cold-water fish have a long growth period, so they are more nutritious. The main varieties of deep-sea fish include hairtail, yellow croaker, cod, sardine, shark, whale, salmon, tuna, sea bass, Pacific saury, sea eel, Spanish mackerel, yellow croaker, pomfret, mud carp, anchovy, filefish, etc., while in seafood restaurants one can also see small coastal fish species such as silver barracuda, sand smelt, yellow anchovy, little yellow croaker and silver pomfret. These fish are produced in large quantities, are mostly seen as frozen fresh products, and their price is very cheap.