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Chilodonella

Chilodonella cyprini.

Chilodonella is another protozoan parasite which effects the skin and gills of koi.
This koi parasite is typically between 40 and 70 microns in length and is oval in shape. Again, identification of this parasite can only be achieved through the use of a microscope.

The parasite multiplies quickly through division, although from time to time a pairing of two individuals takes place where some genetic material is exchanged, this process is known as conjugation.

As this koi parasite is an efficient swimmer, infection from koi to koi can also spread quickly, especially in overstocked ponds.

Effective treatment of this koi parasite can again be achieved through the use of Malachite green and formaldehyde mixed together, at the same dose rate as for White spot and Costia. In many cases, one dose is enough, however further skin scrapes should always be taken and secondary doses applied if required.

Treatments for Chilodonella