Eating fresh balsa fish is not harmful, but balsa fish that has been left for too long may cause food poisoning when consumed. Balsa fish is nutritious and belongs to the sea fish. Each 100 grams of balsa fish contains 120 to 150 calories, 22.7 grams of protein and 2.9 grams of fat. Basa fish is a typical high-protein, low-fat deep-sea fish, at the same time, the fat is mainly polyunsaturated fatty acids, belonging to the high-quality fat; protein for high-quality protein, containing the body’s eight essential amino acids, absorption efficiency, very suitable for all kinds of people to supplement high-quality protein. However, there is an obvious characteristic of balsa fish, that is, its meat contains a large amount of histidine, if left for too long, its meat will be corrupted, producing a large amount of histamine. When histamine enters the body, it binds to histamine receptors and produces an allergic reaction, resulting in allergic food poisoning. Therefore, it is recommended to choose fresh fish, which is beneficial to the health of the body if consumed in moderation, and avoid consuming large fish that has been left for too long to avoid damage to the body.