okay need help with fighting fish

[Montaquelaveist]

Hey guys so i just bought a flagfin angel and put him in my 220 and now my mimic tang is harassing him will this stop or will he kill him i can't catch the angel or the tang because of the amount of rock work i just find this weird that the tang will bother the angel and the tang hasn't been in the too long about 1 1/2 weeks any help

 

[sunny]

Put a mirror inside the tank. The mimic will just fight his reflection and in a day or two the new fish will settle down.