COMMON KOI ECTO-PARASITES Parasites that require a microscope for identification   Trichodina     Icthyopthirius Multifillis (White spot)   Ichthiobodo (Costia)     Tomite stage in white spot life cycle   Gyrodactylus (body fluke)     Gyrodactylus (hooks aid indentification)           Parasite visible with the naked eye   Argulus (Fish Louse)