I need help! My fish has developed some serious body rot, and it came on really suddenly. He didn't have any signs of fin rot before this happened, and then the next time I changed his water, he had this white fuzzy stuff on his body. He wasn't moving around or eating, so I could tell he was sick. I went to the pet store but all they had for him was Bettafix, which is just tea tree oil.
I started using that, and it seemed to be helping a bit because he was moving around a little more. The fuzzy stuff was gone but it left a HUGE wound where the scales have rotted away. I'm not sure if this means he is getting better or getting worse. Today I threw away his bowl and put him in a quarantine cup until I can get him a new bowl and new rocks later today. He has been very active in this cup despite his really painful-looking wound.
I live in a college residence hall, and we don't have very good sinks so when I do water changes, I'm not sure I get all of the grit and grime out of the rocks of my bowl. I plan to do a better job cleaning the tank from now on, including weekly water changes and daily water changes until this disease clears up!
I think I need to use some kind of fungal medication, but I'm really not sure. Is he getting better or getting worse? What are his odds of survival? I feel like such a terrible fish owner :(