fighting fish

[BlueTang<3]

so i have my 180 reef tank with a 6-7 inch blonde naso has been her tank alone for 3 months recently added a 3-4 inch sohol tang and there has been nothing a few nips and tail slaps so i thought we got lucky. until the other day when i got home from work and the sohol was riding around clamped to the nasos tail. so i put a egg crate diver in the tank to separate them in the middle any chances these fellas will ever get along or will the sohol have to go