Black velvet angel is dying

[fishoholic]

As I type this my Black velvet angel is dying I have been worried about him because for the last 2-3 days I noticed he stopped eating, he was eating some mysis before that. I got home today and I couldn't find him. Steve lifted up a rock and he was behind it looking dead. However the rock moving spooked him enough and he swam out to the front of the tank where he then lied down in the corner and the other fish started to nip at him

I didn't want the other fish making a snack of him (couldn't bear to watch that happen) so I caught him (which of course was stressful for him, but since he wasn't doing well anyway I though maybe moving him could help) and put him in my new tank which has 2 chromis and a mandarin goby, who will leave him alone. He is at the back of the tank laying completely on his side not moving around and breathing very heavily I tried to put some mysis by him thinking if he would eat something maybe it would help, however he ignored it. I don't think he's going to last much longer, I don't think there is anything I can do for him. I'm feeling very sad but sharing my feelings help so thank-you for letting me do so. If nothing else at least he's not getting picked on/eaten by the other fish.