The tank was divided into 2 and I let him stay on the "peaceful" side ( with the false percula and green chromis). 2 days ago I found him on the other side of the tank ( that house the rest of the fish which include 1 hippo, 1 yellow tang, 1 flame angel). He was being chased by the flame angel and the yellow tang so I tricked him back to the peaceful side. But then I notice he will swim up and down the divider tryin to slip through to the "aggressive" side again so I decided to take off the divider. Now the divider is off, and no one chase him anymore that I notice. He still not eating live clams or hikari mysis that I offer, and just scavenging (not sure what) in the live rock. The other fishes go crazy for live clam so I hope he will observe that and start eating?