Herrings are one of the tastiest fish you could ever have. They taste delicious, especially when they are well smoked. However, keep in mind that smoked fish has a large amount of sodium which might not be good for some. On the nutrition side of things, herring can keep a person's red blood cells in good condition. This is because herrings contain iron, amino acid and vitamin B12, both of which are needed to make haemoglobin. Furthermore, you can find magnesium, calcium and phosphorus in herrings which help the body make hydroxyapatite. Hydroxyapatite is a component that is used to make our bones and teeth.