I plumbed in a 2nd tank and am moving some livestock to the new tank. They share a sump and water so are the same system. I have a surgeon tank is fat and healthy that was the largest in the tank and rather aggressive so I moved it first. It is currently the only fish in the tank but is swimming on its side or nose toward the ground. If given food it still eats ferociously but quickly goes back to is strange behavior. Could something have happened to its swim bladder during the transfer? Or something else?