Copperband and Yellow Tang?

I've already got a yellow tang in my 90, and I've always wanted a copperband. To add to this, I have aptasia starting to run the place. I've heard mixed reviews about the prospects of adding a copperband in this situation. My yellow tang is definitely the king of the tank, but he's also never been aggressive to anyone in the year and a half that i've had him. Any thoughts?

 

Also, has anyone kept a copperband in a reef before. I've done some extensive research and it seems worth it and relatively safe with what I have, but any hands on experiences?

 

I have a 200 gallon tank and a larg yellow tang and i threw a copper banded in for the same reason and the tang picked on him to much and he died... try maybe a file fish they are reef safe unlike the copper banded and i think the tang wont pick on him if he is not yellow

 

I believe filefish are not reef safe as they will eat mobile invertebrates.