Tetrafin Goldfish flakes are a best selling goldfish food has been optimized with the fishkeeper’s success in mind. “Clean & Clear Water Formula” means that the flakes are even easier to digest and do not leach colour, thereby keeping aquarium water clean and clear. These Goldfish Flakes continue to be made with patented, health-enhancing ProCare. This precise blend of immunostimulants, vitamins, biotin, and Omega-3 fatty acids is custom designed to strengthen your fish’s resistance to disease and stress.