Friday, June 29, 2007

White Bump On Fin

I have a new koi and he has developed a white bump on his fin - I am wondering if this is a parasite. Also, he has a couple small blue fuzzy dots on his side which I suspect are fungus. How do I treat these two problems? -Betsy

That white bump is probably carp pox. Carp pox is a virus that makes solid waxy lumps appear on Koi. Carp pox usually appears in cold water and then goes away when the water temperature rises. Carp pox is not deadly to Koi, it is mainly a cosmetic issue.

The small blue fuzzy dots could just be color. If it is a fungus, treat it with a fish safe fungicide.

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