For example primary and secondary fungal infections (white or slightly off white film or fluffy growths on the mouth, fins or body of your fish), bacterial skin infections and skin / gill parasites, protozoan parasites (discolored skin patches, cloudy fins, rubbing against plants, decor and gravel), ulcers and wounds, Dropsy, Shimmying Disease and fin rot.  An added advantage is its ability to assist wound healing and to protect the skin layer.  eSHa 2000 also blocks Neon Tetra Dise