[Visceral mycosis of tropical freshwater fishes (author's transl)].

Fourteen cases of a systemic mycosis in ornamental fresh-water tropical fishes are recorded. Clinical signs, cystic lesions in the liver and spleen, recall those of an infection by the fungus Ichthyophonus, or Ichthyosporidium hoferi. The possibility that the fresh-water fishes' parasite might be of a different species is discussed. Morphological aspects of the yeast-like fungus in culture are described.