Herring is a fish that lives mainly in the waters of the Pacific and Atlantic oceans and lightly salted seas. Herring is one of the fattest fish, but in terms of protein content it is an absolute record holder. It also contains vitamins (B1, B2, B5, B6, B9, B12, D), minerals (potassium, magnesium, calcium, phosphorus, iron, etc.). Due to the high content of Omega-3 acid, herring is recommended to be eaten for the prevention of cardiovascular diseases.