青魚, or "blue fish," refers to a category of fish that includes species like mackerel, sardines, and herring. These fish are known for their high-fat content, particularly omega-3 fatty acids, which are beneficial for heart health. They are commonly found in colder waters and are popular in various cuisines around the world. In addition to their health benefits, 青魚 is also valued for its rich flavor and versatility in cooking. It can be grilled, smoked, or used in dishes like sushi and sashimi. Many cultures appreciate 青魚 for its nutritional value and delicious taste, making it a staple in many diets.