Hey! Today I purchased a bangaii cardinal and a mandarin dragonet from my LFS to add to my established display. I put them in an acclimation bucket, and they have been acclimating for about an hour now. My LFS isn't the best at fish keeping from what I had heard, but the shipment of cardinals and dragonets had gotten there just a few hours prior. They have an airstone with them and this fish was behaving normally at the store. I watched them for about 20 minutes before I decided they were ok to take home. About 30 minutes ago I noticed some 3-dimentional spots on the body of the bangaii (who is little, just under then or about an inch). 10 or 15 minutes ago took the bangaii in the net and lifted his side out of the surface of the water and shone a flashlight on his body and since the spots had gone away, I decided they were just bubbles. I put him back in the water, swims out of the net after a minute, still acting normal. Just a minute ago I saw him struggling to swim upright. He would float on his side, then move back normally, then stop and float on his side again. That concerned me a good deal. Is there anything I should do? I noticed the bubbler offsetting his swimming earlier, but he is on the other side the bucket and doesn't look close enough to have that be the problem at the moment. The mandarin is looking fine. Any help is appreciated! Thank you!