Good ole canned tuna fish is an excellent way to provide your kid with protein, niacin, B vitamins, iron and zinc. It's low in fat and the fat it does have is the healthier Omega 3 kind. These unsaturated fats help brain development and get your kid on the right track when it comes to heart health. Don't go overboard though, because mercury levels in tuna means it should be eaten sparingly. Your child may love tuna fish salad sandwiches, but if not, try breading it for pan-fried tuna cakes. Melt a little cheese on top for a dose of calcium and serve it with some whole grain rice and broccoli for a complete superfood meal.