The red sores on the koi are bacterial infections that have gotten through
the slime coat by the fish scraping itself against something in the pond,
the net, or the previous pond. There is a product that I really like for
keeping the bacteria in check, called KoiZyme. Once the fish break, it is a
good idea to feed a medicated food, but the most important thing is to be
absolutely sure the water is pristine. Zero ammonia and nitrites are a
must. Nitrates should be below 25. If the sores become very bad, it is
sometimes necessary to inject the antibiotics, though there are some now
that you can dip the fish in.
--
RichToyBox
http://www.geocities.com/richtoybox/pondintro.html
"Randy" wrote in message
news:4nJyc.6413$Hg2.3690@attbi_s04...
Hello all, I have a 15x18 pond and have had 8 very large goldfish(8-10")
in
it for 2 years now. I just put in my first koi. It has been in the pond
for
2 weeks and still is a very active swimmer and feeder. All of the golfish
are fine except for one silver, red, and black one that has a white fuzzy
spot on its side. The new koi has a red sore on its side and redness where
the tailfin meets the body. I really don't want to lose this one.
It is and white and black butterfly koi with and orange snout. It

Any sugestions on what is wrong and how to correct it would be sincerely
appreciated.

Randy