Hello, this afternoon as I was feeding my fish I noticed that one of my black clowns weren’t coming out to eat as this one always does. He always gets bullied and bit so I just thought he was hiding for a moment. But then 5 minutes went by he still wasn’t out and his buddy always kept swimming to the back of the tank behind the rocks. So I figured I’d move the live rock around and try to find him. when I picked up the bottom rock he was laying there barely moving looked like he was stuck under the rock and something was picking at him now his fins are torn up and he has white spots on him and he is barely swimming. Is there anything I could do to help him survive?