This original New Life Spectrum all-purpose daily fish diet is for a wide variety of tropical aquarium fish. It features the core high-density Spectrum Nutrition Formula. For both freshwater and marine fish. Formulated to enhance the health and color of your aquarium companions -- even helping reverse malnutrition-related head, fin and lateral line erosion. This food has high-quality easily digestible marine proteins (like whole Antarctic Krill and Squid), algaes and seaweed (incl. spirulina, kelp and chlorella. There is negative Buoyancy (most pellets will sink. It naturally enhances your fish's color with no added hormones. No artificial colors, flavors or preservatives. Includes garlic for immune system health. 1mm - 1.5 mm pellets. Most pellets will sink (high-density). 600 grams. This original New Life Spectrum all-purpose daily fish diet is for a wide variety of tropical aquarium fish. It features the core high-density Spectrum Nutrition Formula. For both freshwater and marine fish. Formulated to enhance the health and color of your aquarium companions -- even helping reverse malnutrition-related head, fin and lateral line erosion.