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Ichthyophthirius, koi (Cyprinus carpio)
<i >Ichthyophthirius</i>, koi (<i >Cyprinus carpio</i>)
Ichthyophthirius, koi (Cyprinus carpio)

    First part: Video of microscopic examination of a skin mucus biopsy sample from a koi. Numerous trophonts and theronts of Ichthyophthirius can be seen. Unstained wet mount; magnification, 40×, 100×, and 400×. Second part: Video of microscopic examination of a gill biopsy of the same fish. Ich trophonts can be seen encysted below the epithelium. Unstained wet mount; magnification, 100×.

Courtesy of Dr. Denise Petty.

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Parasitic Diseases of Fish