Ulcers on Koi - HELP Please

Toss em in the compost pile. Fish are nothing but trouble anyhow
espeically in the hands of folks looking to get info for their well
being and care off USENET........
On 4 Jul 2006 17:27:17 -0700, "acornscone"
wrote:

I have 5 koi, about 15 inches each in my 1300 gallon pond. A couple
days ago, one of the koi was found dead and it had some ulcerations on
its underside near the vent. I checked the other koi and two of them
had what looked like half their lip was disintegrated and red like
bloody meat. Another had a red ulcer looking area about one inch in
diameter on its side and the last one had about a 1/4 inch red spot on
the outside of one gill flap. I love these fish and have had them in
my pond for 12 years.......The ulcers look really scary, and our fish
store owner told me that it is probably a koi virus that I got along
with the 5 new three inch koi that I bought last September, but it was
latent until the water warmed up recently. I had quaranteened those
new koi for one month, with no problems, but two of those died last
month for no reason and I could see nothing wrong with their bodies.
The three little ones left seem to be just fine, and the fish store
says that they are probably resistant carriers of the virus that is
causing the ulcers on the larger fish. He said the only way to treat
is with massive antibiotics and hopefully the virus runs its cycle
before killing the koi, and this would also cover in case it is a
bacteria instead of virus. I am treating with Tetracycline and
Trimethiazole in a 30 gallon hospital bin, but that is awfully small
for these three big koi, and I'm afraid other things will go wrong.
Any suggestions on treating my whole 1300 gallon pond and the other
three little koi with it? I tried a topical antibiotic, but actually
injured two of the fish worse while trying to handle them, so I've
given up on that method. I really appreciate any advice, thanks in
advance.
Marianne

You can reach -Ed Alston at

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