Hey guys!
Im a little concerned about my blue gourami. His side has swollen up and Im not sure what to do about it. I have isolated him in a hospital tank just in case. His water quality is good as far as I can tell. no ammonia and ph of 7. I dont have a master test kit at the moment to test the other factors. I am concerned because I had a betta that died of dropsy about a month ago that had originally shared a tank with him before I quarantined it. I dont know if it could be the same thing or not. Any ideas of what to do?

Heres a picture. sorry about poor quality. Im working off an iphone.IMG_0112.jpg