I added a Blue Spot approximately 4 weeks ago to my reef tank after doing a fresh water/methylene blue dip. About a week ago, I noticed that the outer edge of it's bottom jaw was starting to peel away. I initially thought it was temporary damage from running into a rock etc. I then noticed that skin deterioration / rot was spreading to the frontal part of it's head (between eyes). The strange part is that he or she still eats as best it can. I have read about mouth fungus / cotton mouth disease, but I am not sure that it is what I'm dealing with, and as you can imagine, getting a Jawfish out of a reef tank is next to impossible. All other fish in the tank are doing very well. Any suggestions and / or recommended treatments will be greatly appreciated! See attached photo.