API has developed a fish food diet that delivers a healthier aquatic environment for fish and clean, clear water. API Fish Food contains a unique, nutritionally enhanced protein to ensure easy uptake of nutrients, for maximum absorption. Fish more readily use the nutrients and release less waste and less ammonia, for clean, clear water. Laboratory testing has proven that API Fish Food delivers up to 30% less ammonia than the leading competitor. API Fish Food, The Clear Choice in Fish Nutrition.