It sure looks like the xenia Marc mentioned on RC, but I would assume thats not what it is. Or looks like a fern type red turf algae I have seen, but then one can see the base portion thats attached to a rock. Has me stumped. Marc,s suggestion about asking Borneman or Shimek over at MD, may help.
Tony, the copperband is an aiptasia eater or at least was before I spoiled him. I would think it still would seek them out. I know Ben has put some in the tank that currently holds the copperband but he has not ate any. It never ate any type of zoo,s. I even have some pest types on some rock and it never looked at them either.