Salmon (Oncorhynchus), also known as salmon, salmon and salmon, belongs to bony fish, Salmoniformes and salmon, mainly distributed in the waters at the junction of the Atlantic Ocean, the Pacific Ocean and the Arctic Ocean. It is a cold-water highly migratory fish and is praised as the "Emperor of the Ice Sea" by the international food community. Studies have shown that tuna and salmon are delicious, nutritious and rich in bioactive substances such as EPA and DHA.

There are more than 30 kinds of commercial salmon. At present, there are two kinds of trout (three trout and golden trout) and four kinds of salmon (Pacific salmon, Atlantic salmon, Arctic spotted salmon and silver salmon).