Fish Fillet is a low-fat high quality protein. Fish Fillet is filled with omega-3 fatty acids and vitamins such as D and B2 (riboflavin). Fish is rich in calcium and phosphorus and a great source of minerals, such as iron, zinc, iodine, magnesium, and potassium.
A serving of salmon -- 3 to 4 ounces -- is about 200 calories. It's very low in saturated fat and a good source of protein. It's also one of the best sources of vitamin B12. It's also bursting in potassium and other nutrients like iron and vitamin D.