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Sam
Junior Member
Username: saylestock

Post Number: 25
Registered: 10-2005
Posted on Thursday, March 02, 2006 - 11:13 pm:       

I am having some major problems that I can not pin point. I have never seen anything like this in all my experience. I have no idea where it came from. It started with my two dwarf gouramis. One got a lesion the kept growing and basically ate a huge hole in his side. It finally died. Then a couple weeks later the other gouramis started with the same symptoms. I then removed him from the tank and he died a couple days later. No all four of my angel fish are doing the same and I lost a spotted catfish today as well. I also have a chinese algea eater, a pleco, and a rope fish that are not showing any signs of problems. It all seems to start with a little pimple that continues to grow and eat the flesh of the fish. It has a white middle that when the lesion grows big enough falls out and it is one big open sore that continues to grow.

I thought it might be parasites or a fungus so I have treated the tank with Melafix and when that didn't help I tried CopperSafe. I also read where you have suggested salt, so I got some freshwater salt treatment and have tried that as well.

Does anyone have any ideas what this may be and what I can do to get it out of my tank.

Unfortunatly I do not have another tank that I can use as a quaretine tanks. Water levels are: amonnia-0, Nitrite-0, Nitrate-10, PH-6.9, GH-120, and KH-80. I do a weekly 50% water change.

Thanks for the advice.
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russ
Ancient Member
Username: rasaqua

Post Number: 3848
Registered: 01-2003
Posted on Thursday, March 02, 2006 - 11:35 pm:       

Sam,

Ulcers and lesions you described can be caused by several bacteria. The chronic condition you have described sounds like systemic mycobacteriosis.
Here is a link that may aid in dealing with mycobacterium:

http://www.fishpalace.org/disease.htm#TB
"For every difficult question, there is an answer that is clear and simple and wrong."
(George Bernard Shaw)
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Sam
Junior Member
Username: saylestock

Post Number: 26
Registered: 10-2005
Posted on Saturday, March 04, 2006 - 12:10 am:       

Thanks for the information. The closest looking from the web link seems to be Fish Tuberculosis. I will try the suggested treatment along with frequent water changes.

I tried to take some pictures to help the diagnosis, but between the fish moving and the glare from the flash, it didn't work out very well.

Thanks again for the link. I was looking for a site with real pictures and not the drawings. I'll keep you posted.
Sam
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dan
Moderator
Username: dan

Post Number: 6635
Registered: 01-2003
Posted on Saturday, March 04, 2006 - 05:26 am:       

another possibility is Epizootic ulcerative syndrome caused by Apahnomyces invadans. this disease works from the inside muscle outward to the dermis/epidermis causing lesions. there has been some reported prophylactic and therapeutic success addressing this parasitic fungus using RALLY in combination with standard doses of the antibiotic Kanamycin available at shops in various formulations.

If you pursue combined RALLY/Kanamycin treatment, use it according to package label instructions, and add one dose of RALLY every 3 - 5 days.

The active ingredients in RALLY are biodegradable; however, you should run carbon or a Polyfilter for a few hours (and then remove it) before adding a repeat dose.

If small fish such as gouramis don't show lesions after a period of weeks, they are probably not/no longer infected and, therefore, no longer producing infectious spores.

No sores + no spores + weeks = cure(?). There isn't much known yet about latent spores ("hyphae") which may survive in the flesh. The fungus does most of its damage in the muscle tissue where the effects are not readily apparent; when the infection breaks through the epidermis and forms an open sore the water is being seeded with infectious spores. Therefore, if your fish show no visible symptoms, let's say for at least four weeks, you probably have been successful it saving them and terminating the infection cycle. However, remember that the infection is invisible during most of its cycle in any given fish: therefore what appeared to be "stopping the infection in its tracks" over a period of 10 days or so doesn't mean the infection was eradicated.

Finally, a fish can have multiple tracts of infected muscle, leading ultimately to multiple sores. So, while getting one sore on a fish closed up and healed is a significant achievement, it again doesn't mean much until the fish stays clean for at least two or three weeks.
you're never too old to have a happy childhood.
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