Thanks for telling me, I’ll study more and really try to improve.Sounds like the fish is stressed out...badly and possibly fatally unless something is done to make him feel safer and more secure
He has escaped, been found, plopped into a totally naked aquarium without any substrate or things to hide behind or to get away from the light above his head
Talk about completely insecure little fish going out of its mind...it is no wonder he is tearing up his finnage and not eating....poor thing is in solitary confinement without a stick of furniture to play with