Hexamita

Hexamita is a flagellated protozoan that can be found in the intestine of healthy and sick fish. It is of particular importance in angel fish and discus. It can also cause problems in oscars and African cichlids, and other fish. Stress, particularly caused by poor water quality or inadequate nutrition, seems to be associated with increases in the number of flagellates in the gut and development of clinical disease. Elimination of stress and correction of husbandry will help correct an outbreak of hexamitiasis. Metronidazole provided as a medicated feed or a bath is an effective treatment and even severely affected fish often respond to therapy. Commercial producers of ornamental cichlids should periodically check fish for hexamita infections and treat any infected fish.