It is a marine fish widely distributed in tropical and subtropical waters around the world. Named after its fast swimming speed, strong physique, and distinct yellow fins. Adult yellowfin tuna can grow up to 2 meters in length and weigh over 100 kilograms. The body is streamlined with well-developed muscles, making it very suitable for long-distance fast swimming. The skin is smooth, with colors ranging from dark blue to silver gray, and the abdomen is lighter with a metallic luster. It is a carnivorous fish that mainly feeds on small fish, crustaceans, and other marine organisms. Has strong hunting ability and can chase prey at extremely fast speeds.

It is one of the largest species of tuna. The body is short and sturdy, with a conical shape and crossed tail fins. The body length is generally 1-3 meters, and the weight can reach 200-400 kilograms, with the largest reaching over 3 meters and weighing more than 700 kilograms. The back is greenish black, the abdomen is silver white, the tail is raised with black ridges, and the whole body is covered with small round scales. It is a migratory fish species in the middle and upper layers of the ocean, which likes to form groups and swim fast. It mainly feeds on fish, cephalopods, and crustaceans. Distributed in temperate and tropical waters of the Atlantic, including the East China Sea. The meat is delicate, rich in oil, light red in color, and has an excellent taste, making it expensive.