Skin Ulcers?

Anyone,

I have an Amazon tank with three keyhole cichlids, two young angelfish, a
few cories, and a few small tetras.
Recently the largest keyhole developed a nasty looking ulcer on the back of
his head. He hides a lot, so he
could have had it for a few days. I did a 50% water change, cleaned out the
filter (Eheim), added some salt,
and turned up the temperature a bit, but he died within hours. I just
noticed a similar lesion near the tailfin of
one of the other keyholes. Any ideas?? Anything else I could do??

Pictures of the tank:
http://home.comcast.net/~zeno42/Amazon.htm

Pictures of the keyhole that died (the current ill one won't come out for
pictures):
http://home.comcast.net/~zeno42/DSC00029.JPG
http://home.comcast.net/~zeno42/DSC00030.JPG


Thank you very much,
Kevin Murphy

Ulcers are primarily caused by baterial infection, which is most often
caused by poor water quality. Treat affected fish in a hospital tank
with a gram negative antibiotic like kanamycin, tetracycline, anything
with furan, or maracyn-2. These antibiotics will also kill the
nitrifying bacteria in your tank. Most of all, keep up with weekly
water changes!
Cris

On Sun, 16 Nov 2003 20:03:52 -0500, "Kevin Murphy"
wrote:

Anyone,

I have an Amazon tank with three keyhole cichlids, two young angelfish, a
few cories, and a few small tetras.
Recently the largest keyhole developed a nasty looking ulcer on the back of
his head. He hides a lot, so he
could have had it for a few days. I did a 50% water change, cleaned out the
filter (Eheim), added some salt,
and turned up the temperature a bit, but he died within hours. I just
noticed a similar lesion near the tailfin of
one of the other keyholes. Any ideas?? Anything else I could do??

Pictures of the tank:
http://home.comcast.net/~zeno42/Amazon.htm

Pictures of the keyhole that died (the current ill one won't come out for
pictures):
http://home.comcast.net/~zeno42/DSC00029.JPG
http://home.comcast.net/~zeno42/DSC00030.JPG


Thank you very much,
Kevin Murphy

Thanks Chris,

I ran Nitirite, Ammonia, etc tests but everything looked fine.
I am trying an antibiotic treatment with regular water changes.
Shall see what happens.

Thank you,
Kevin

"Cris" wrote in message
s.com...
Ulcers are primarily caused by baterial infection, which is most often
caused by poor water quality. Treat affected fish in a hospital tank
with a gram negative antibiotic like kanamycin, tetracycline, anything
with furan, or maracyn-2. These antibiotics will also kill the
nitrifying bacteria in your tank. Most of all, keep up with weekly
water changes!
Cris