The most widely eaten fish in the world is the herring. Herring are small, oily fish that are found in both the North Atlantic and North Pacific Oceans. They are consumed in various ways, including pickled, smoked, or canned, and are a staple in many diets, particularly in Europe and Scandinavia. Herring are rich in omega-3 fatty acids, which are beneficial for heart health, and provide important nutrients such as vitamin D and selenium. Their abundance and nutritional value contribute to their popularity as a food source globally.