ICTIOFOR is formulated for freshwater aquariums and is an effective treatment against the parasite ichthyophirius eradicating it. Ichthyophirius is one of the most dangerous aquarium parasite infestations. The symptoms are white spots on the body and fins of the fish with dangerous consequences and visible effects: the fins are closed and the fish rubs itself against rocks to remove these white spots, swims listlessly, eats little and loses weight rapidly leading to death.