Hikari Tropical Sinking Wafers are a premium staple diet for catfish, loaches, and other bottom feeders. The unique wafer shapes allows bottom feeders to feed and swallow easily and comfortably. They will not dissolve or cloud the water, but are easy to digest. The food offers well-balanced nutrition with all the vitamins and minerals that bottom feeders need. It is also high in stabilized vitamin C to reduce stress and build immunities to disease.