Active Life Formula helps nutritionally support fish’s immune system for optimal health and long life. Based on long-term university studies, the proprietary formula joins high quality, complete nutrition with even more benefits. 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, vitamins, biotin and Omega-3 fatty acids is custom designed to strengthen fish’s resistance to disease and stress.