Hi:
I've Had tassled files in the past , great fish...for a fish only.
They will chase down and eat any moving shrimp, they didn't bother hermits. At the LFS it didn't seem to bother any of the LPS which were in the tank, but it would occasionally nibble on some soft corals. Overall i don't think its eats much coral, but i wouldn't risk it. the get real goo dsize too, mine was about 5-6" after a yr or so.
frank