I just picked up a royal gramma basslet from someone locally who is parting out their tank. The fish was in a gallon size bag, which I left in the QT tank for 30 minutes to acclimate temperature. I made sure QT water salinity matched the water in the bag, and then transferred the fish. He was swimming around fine at first, but then he freaked out and tried to jump out. Luckily I have a top on the tank, but the fish is swimming against the side of my PVC fitting, and seems to just float there until he flutters back to the underside of the PVC. I turned the lights off to create less stress on the fish. Any other ideas on what to do?