Something is wrong with our other dwarf gourami. Lately she hasn't been active at all and doesn't come out very often. Now i've noticed that she can't swim very well anymore. Right now she's at the bottom of the tank laying on her side. I don't see anything visibly wrong with her but i've noticed that she isn't eating much and today she seems that she's having trouble swimming. Is this swimbladder disease? I'm so worried, I don't want to lose another gourami!