I agree rhat it looks like a bubble tip (entacmea quadricolor), but I dare say that's more than a little bleached. It's pretty severely bleached. But the good news is that it's not 100% bleached, or at least doesn't look so. Fees it regularly and keep the tank parameters stable and it should recover.
Clowns will pick whatever they want as a host. Anemone, coral, overflow boxes, PVC
pipes, feather duster worms... They'll either take it someday or they won't. We silly humans don't really have a say in the matter. Lol