How do I treat this?

[spence0416]

I posted this in the Fish disease forum but have had no responses. I was wondering if this is Brook, or something else. It almost appears as an ulcer on the side of the clown. I need to begin treatment as he has not shown any signs of improvement. He continues to eat well and is very active. I thought it might have been an injury rather than a disease so I did not quarantine right away. None of the other fish show any signs of infection, and it has not progressed any. It has looked like this for a few weeks now. So if it is a disease it is not a very fast moving one.

http://img2.putfile.com/thumb/5/13114264076.jpg (http://www.putfile.com/pic.php?img=5437271)

http://img2.putfile.com/thumb/5/13114264092.jpg (http://www.putfile.com/pic.php?img=5437269)

http://img2.putfile.com/thumb/5/13114264059.jpg (http://www.putfile.com/pic.php?img=5437268)

[spence0416]

bump for one last shot at a treatment.

[frederickk]

Hopefully someone will help

[dr.darkness]

Try fish disease treatment again somebodies got to know.

[NealNano]

From the pics it look like a fungus. You need to put it in a hospital tank and treat with something like marycn or some other antibacterial treatment.

[caseyjones]

nitrofurazone bath....1/4 tsp per 20 gallons, everyother day with a 25% water change in between. ONLY in a hospital tank