So, I've had Edgey Boy for about 2 years. I went on vacation in August, and when I came back, his tail had fallen off, as you see in the picture. From what I've read, it sounds like fin rot, but I'm worried it could also be fish TB, because he has lost his color a bit. Or do you think he's just getting old? Anyway, I want to buy an antibiotic for fin rot. If he doesn't have fin rot, the antibiotic won't hurt him, will it? And if it's fish TB, is there really nothing I can do? :(