Tetra TetraMin Tropical Flakes are a nutritionally balanced complete diet for optimal health in top- and mid-feeding aquarium fish. The world’s favorite fish food continues to be an innovation leader. Today’s TetraMin has been improved with the fishkeeper’s success in mind. The “Clean and Clear Water Formula” means that the flakes are even easier to digest and do not leach color thereby keeping aquarium water clean and clear. TetraMin continues to be made with patented health-enhancing ProCare. This precise blend of immunostimulants.