I picked up a black cap basslet from my LFS a week ago and a few days ago when he came out to eat I noticed his belly was bloated and he is swimming with his nose down and tail up. Based on my research it sounds like since he is a recently purchased deep water fish the likely diagnosis is gas bubbles trapped in his swim bladder. It sounds like my options are wait it out to see if the gas bubbles diffuse on their own or catch him and try to lance his swim bladder to release the pressure. He is currently eating well and spending most of his time in a tiny cave so he isn't out struggling to swim. How long should I give it to see if it resolves itself before taking more aggressive actions? Are there any risks is waiting?