Esha Hexamita Discus disease treatment is a professional treatment for cichlids and angelfish. It is safe to use with all freshwater tropical and coldwater fish as well as being harmless to fish, plants and filters.  There are a number of symptoms that your discus, angelfish or cichlids may show when contaminated with    hole in the head    causing Hexamita parasite.  Symptoms of    hole in the head    causing Hexamita parasite:  The infected fish is cast out from the group Loss of appetite Dull eyes Darkening of skin Apprehensive behaviour Slow reactions White stringy faeces Hexamita also treats gill flukes, intestinal disorders and slimy skin. as well as fungus, finrot and dropsy.