TetraColor GoldFish Granules promote the development of natural pink to orange-red colors in your goldfish. These tasty granules are the perfect supplement to your goldfishs primary diet and will not cloud water when used as directed. Packed with patented ProCare, this formula contains a precise dose of select vitamins and nutrients that support immune system health. Biotin works to maintain a healthy metabolism and Omega-3 fatty acids provide energy and growth.