Wow...that's what reading can accomplish!
Still no. Filefish tend to keep to themselves, although there are clearly many, many species of them, and behaviour can vary. My gramma shared a tank with a matted filefish and a pygmy whitespotted filefish (not at that the same time), and there were no conflicts. I've just never seen any filefish have any conflict with any other fish: I have a radial and pygmy whitespotted filefish sharing an Evo right now. They don't even look at each other.
I moved the basslet out before I put a red-tailed filefish into the cube, so I can't speak to that one, but I think you'd be okay unless you have some true specimen of aquarium exotica that's highy volatile.