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Re: HELP a disease question!
On 4 Dec 2001, at 12:29, Barry Cooper wrote:
> I agree that remote diagnosis is nearly impossible. However, I would
> not agree that this is necessarily bacterial in origin. It could be
> lymphocystis (a viral disease)
This was my first bet too.
Look at your fish, do they really look sick? or just
pepperred with the growths. Fish can live for a long
while with lymphocystis and still look quite healthy as
opposed to white spot etc...
> parasitic. The best approach would be to fix one or a few fish and
> send them to a competent fish pathologist. Dr. Ed Noga at NC State
> would be a good choice. You'd have to contact him to establish fees,
> etc.
You could also just cut off an infected bit of fin...
In the mean time keep dosing with the formaldehyde. It
is nasty terrible stuff but there is nothing else that
can stuff viruses up more. The formaldehyde should
penetrate the growths and cross link some of the DNA
making it useless and so kill the infected cells and
virus... in theory.
> My own experience is that Mycobacterial infections in fish usually
> (stress usually) produce diffuse lesions,
Yes. big or small nasty lession, clamped fins, dropsy,
"wasting"... if your swords had Mycobact. infection you
would see it very clearly and NOT on the fins like you
discribe. Of course, the odds are your fish do have it
latent and their immune systems have simply kept it
under control. This lymphocystis may stress the fish and
cause and Mycobact. outbreak. Try and prevent this by
keeping the fish in saline solution (1tsp salt/gal).
This will reduce the osmotic stress and enable them to
spend their energy on other more needed activities.
ALso, raise the temperature---the down side of this is
that the Lymphocyctis will speed up too being dependant
on the host machinery and all. The immune system will
not be able to rein in the Lymphc. Fish immunes systems
can't seem to see the virus or infected cells.:-(
Hope this helps...
Bye
Tyrone Genade
tyronegenade at yahoo_com
http://www.tyronegenade.0catch.com
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