Fish is rich in high-quality protein, which helps maintain healthy muscles, bones and skin. Although canned fish contains some fat, most of it is unsaturated, which helps to lower blood cholesterol levels and prevent cardiovascular disease. Canned fish is also rich in vitamins A, D, and E, as well as minerals such as calcium, phosphorus, and iron, which are essential for the health of vision, bones, and the nervous system.

Canned fish is a kind of ready-to-eat canned products made from fresh or frozen fish as raw materials, after a series of processing, canning, adding seasonings, sealing, sterilization and other processes. There are many kinds of canned fish, according to the different processing methods, it can be divided into braised, eggplant sauce, fresh fried, steamed, smoked, oil-soaked, water-soaked and other categories. In addition, canned fish is also named differently according to the different materials used, such as canned fish with black bean sauce, canned Wuchang fish, canned scallop fish, canned carp fish and so on.