I just googled mycobacterium marinum!
Hang in there RG...
I too am allergic to several antibiotics so I guess I will stop putting my bare hands in our fish tank and pond when I need to tend them! BBS has been yelling at me about that for years, but I guess I think I'm tougher than any little bug. Do you think it was a new fish that had the bacteria or can it just develop in an established population?
Stay strong, we are all pulling for you!!