Well if its true, it certainly cant be good for them.....as far as causing dropsy?....i think your gonna find a serious lack of experience on the topic. Youre blazing new trails on this one I would imagine.
Might be conisidence, but he seems to be getting better the more he poops I have heard that there isn't much chance once they develop dropsy, but I have high hopes. He is more actively swimming - for a while there - he just sat on the bottom lifeless. *fingers crossed* Hes my giant oranda and Id be devastated if I lost him.
I don't think its the hair. Some kind of systematic bacterial infection probably. If pet hair was dangerous to fish, then my tanks would be ghost towns, plus I think wild fish probably come into contact with thier fair share of animal hair.