Red snapper contain abundant amount of potassium than you think. Consumption of this fish helps with eliminating heart disease. This fish also contains a vitamin called selenium which is very essential for the health of blood and bones. If you are struggling with rheumatoid arthritis problem, then this is the right fish for you! Eat it as many times a week. Red snapper is one of the best low caloric seafood items. It is rich in protein content and it has several minerals that support proper growth of the white blood cells.