New Life Spectrum surface semi-sinking food is a slow sinking food, made with the highest quality krill, herring, squid, mussel protein, and several all-natural color-enhancing ingredients for a balanced diet that boosts immune system function and enhances the full spectrum of your fish's color. It also consists of seaweed, kelp, micro algaes, a premium grade of natural spirulina, as well as a fruit and vegetable extract that consists of spinach, red and green cabbage, peas, broccoli, red pepper, zucchini, tomato, kiwi, apricot, pear, mango, apple, papaya, and peach.