Home Koi Varieties Koi Ponds Koi Care Koi Diseases Other Koi Topics Gallery Sales

Koi Diseases

Cotton Wool Disease






Cotton Wool Disease

Also known as 'Cotton Mouth Disease', 'Columnaris Disease',

or 'Flexibacter Disease'

Type: Bacterial


>> caused by Flexibacter columnaris bacterial infection

>> columnaris usually infect injured or stressed koi, entering the fish through the gills, mouth or small wounds in the skin

>> columnaris is highly contagious to other koi

>> confused by some people with fungal attacks that exhibit similar-looking symptoms




>> white spots around the mouth and head areas that spread to the body and fins

>> white cottony growths that eat away the mouth

>> disintegration of fins starting at the edges

>> 'saddleback' lesion near the dorsal fin

>> in advanced stages, lesions and ulcers may arise

>> disintegration of the gills may also occur




>> treat with copper sulfate or the appropriate antibiotic

>> Acriflavine, Furan, and Terramycin have been used successfully to treat columnaris

>> salting of the water will also help



Copyright 2006 www.KoiAndPonds.com. All Rights Reserved.