Columnaris?

[jpappy789]

Sounds like your fish is recovering well...from whatever it was.

 

[Reframer]

I don't think it is columnaris, looks like a scratch or something that should heal up.

 

[msjinkzd]

Well, somehow I totally missed your thread but I will post up this info anyway. This ism y favorite thread with links on the different types of columnaris (also some have images) as well as treatment options.
http://www.aquariacentral.com/forums/showthread.php?t=134928