the products are made according to the living characteristics and feeding habits of ornamental fishes, small size fishes and marine fishes. The products contain rich vitamins, artemia powder,mineral substances, spirulina, shrimp powder and etc. The effect of color enhancing can be obviously found within 2-3 weeks. Its very puffed and easy to be digested by the fish without polluting the water. Moreover, the products do not contain any toxic substances so that your fish can take sufficient nutrients and ensure the healthy growth of your fishes. 2.Nutrition analysis Crude protein min: 40% Crude fat min: 7% Crude fiber max: 5% Ash max: 10% Moisture max: 10%