This fish food contains Nitrofurazone, which we recommend to treat Bacterial Infections. Bacterial Skin Infections are the most common disease contracted by many Cichlids, especially Discus. Fish infected with Bacterial Skin Infections show a wide range of symptoms and not all symptoms present themselves every time. The most common sign is a milky white coating appears on the skin of the fish (especially Discus) and is often patchy. Fish suffering from Bacterial Skin Infections will usually show at least a little interest in eating, though often they do not actually swallow much of the food. This food is concentrated, so any swallowed will have effective results. Fish with External Bacterial Skin Infections will usually have an increased respiration rate and they will often clump together in the corners of the tank. They commonly get darker and will often clamp their fins. For use with Ornamental Fish only.