Here's a list of the most common Clown/Anenome hosts.
http://www.captivereefing.com/viewtopic.php?t=341

With that said.... false perc's (true perc's as well) tend to pick something to live in and that's it, not always an anenome, just about any soft/leather coral can be selected. So don't be surprised if they chose a home you didn't intend.