Simple and natural, nutrient rich, freeze dried Tubifex Cubes for freshwater and marine aquarium fish. Single ingredient fish food freshly packaged with oxygen absorbers offer an irresistible, fresh flavor that naturally attracts fish. High protein feeding addition for freshwater and marine fish including Discus, Tetras, Guppies, Cichlids, Goldfish, Catfish, Gouramis and many more. Not for human consumption.