Bottom-feeding tropical fish species often experience difficulty in obtaining adequate quantities of food when kept with faster moving species that feed at all levels of the aquarium. Nutrafin basix Staple Food Tablets are specifically formulated for daily feeding of all bottom-feeding tropical fish. The tablets contain a special natural binder that effectively prevents its premature decomposition in the water. This allows bottom feeders the extra time they require to eat adequate quantities of food. Available Size: 36 g (1.3 oz)