At least a few clowns are known to host BTA's in aquariums. AFAIK there is not any one that is more likey to pair w/ an anemone. FWIW I had a maroon clown that immediately took to a BTA. I currently have Occ. clowns that host a Sebae primarily(after a few weeks together), but bounce in and out of the BTA's in my tank as well. If the Sebae was not present I think the Occ's would pair w/ the BTA's. HTH and good luck