Now the world's favorite fish food is even better, with a new lid, a new formula, and a new promise. The new lid keeps hands clean, the new formula is more easily digested and the promise is Cleaner and Clearer aquarium water. TetraMin Flakes continue to be packed 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