Well, filefish are not all that distantly related to triggerfish, if that helps at all
These guys are somewhat passive, IME, but I would not consider them reef safe all in all. And you don't, in turn, want to put them in with particularly nippy fish that would find the tassles something to investigate.
Well, in case you havent figured it out by now, I got one. HE is so small, and at first the fish picked at him thinking he was food, now they are all buddies.