The latest version of this 55-year-old original has been optimized with the fishkeeper’s success in mind. Hands-free feeding with the special lids on some sizes and an easier-to-digest formula yields Tetra’s Cleaner & Clearer Water guarantee. TetraMin Flakes are 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.