I apologize if this has been addressed in another thread - I'm new to the forum. I have a goldfish and he (possibly she, but we've been calling it a boy and named it Jonah) now has what I believe to be tail and fin rot. I've read everywhere about the symptoms and appearances and I think that's what this is. He's by himself in a 10 gallon tank. I've had him for 5 years now and never before had any health issues. We even moved from western Virginia to Southeastern NC a few years ago with no issues. Just last month we moved from NC to GA. I think it caused excessive stress. Then to top it off, his original tank cracked and we had to start over with a new one. So not only did he have to spend time in his travel container, but then he went through the stress of cycling a new tank. Anyway this started last week in his tail. He did have a couple of white spots on the tail but I wasn't sure if it was something I had missed before. Then the ends were frayed and looked like fingers. I did try Melafix but I really didn't like the cancer warning on the bottle so I stopped it and changed out the water. He started to get better. Then today the fins on his belly and all four points of his tail are frayed, some are darkened, others have white streaks. I do see some bloody patches. Also, I think he's either what you call a fan tail or fancy goldfish? Long, flowing fins. So to get to the point, I ordered some Maracyn Two and put two packets in the water (it says two packets per ten gallons on day 1) after I did a water change. He's only got rocks, a wall that holds his bubbler tube, and decorative sign with smooth edges. I know he didn't get caught on anything and he has no roommates to be biting him or anything like that. I figure it must be bacterial, right? I adore this fish and want to make sure he's going to be OK. Am I doing the right thing or is there something else I should be doing? Thanks in advance!