Ichthyophonus hoferi is a single-celled protist that occupies a key phylogenetic position to understand the origin of animals. It has chitin cell wall, hyphae, and an amoeboid stage. It is a common parasite of marine and freshwater fishes. In fish, I. hoferi causes hemorrhages and fin and skin rot, destroys muscle, and induces ova to develop without spermatic fertilization through a toxin.
References
External links Media related to Ichthyophonus hoferi at Wikimedia Commons Data related to Ichthyophonus hoferi at Wikispecies


