Red snapper is a low-calorie, lean source of protein that is rich in selenium, vitamin A, potassium and omega-3 fatty acids. A diet that regularly incorporates these nutrients may significantly benefit your health by preventing serious medical conditions. Despite the potential health benefits, red snapper may contain mercury levels that make it unsafe for pregnant women and young children to eat more than a few times a month. However, if it's safe for you to eat in moderation, it can provide nutrients. Facts about Red Snapper found here.