Epistylis - Fish illness Epistylis is a disease commonly found in aquarium fish. In many cases, it can easily be confused with White spot/Ich, or as a fungus, due to the visual effect it creates on the fish. Epistylis is just as common in the aquarium as White spot and it most commonly occurs in new aquariums. But Epistylis is more deadly than White spot is.
Fish Illness/Disease: White spot, also know as Ich.