It is wrong to say that fish is not recommended for weight loss. Fish is rich in protein and other nutrients, and when consumed for weight loss, it can replenish the nutrients needed by the body, and generally does not cause weight gain when consumed in moderation. The vast majority of fish, such as the common guppy, carp, including some sea fish, such as grouper, etc., are low-calorie food, and at the same time contain high-quality animal protein, easy to digest, and high absorption rate, low fat content. Take guppy as an example, 100 grams of guppy has a calorie content of 117 calories, its protein content is 19.9 grams and fat content is 4.2 grams. It is also relatively rich in calcium, containing 63 milligrams of calcium per 100 grams of guppy, as well as other minerals and vitamins. Due to the high protein content and low fat content of guppy, it can provide adequate nutrition for dieters while increasing satiety. At the same time, the calorie content is not high and does not significantly increase the calorie intake of dieters, so it can be eaten moderately more when dieting. Although fish is nutritious, people who are allergic to fish should not eat fish.