Sorry to hear about your Rhomboid, seems like a lot of them have issues. I have a male who started out doing exactly what you described, I put him in QT and noticed a small bubble on his side. The bubble got larger, I removed him and aspirated the bladder with a syringe then began dosing Kanaplex. I also noted while I had him out that his anal gland appeared to be red. Things got worse for a while then one day he moved his bowels and began swimming halfway normal. Its been over 3 weeks and he still swims strange but I think is healing. Still eats