Love your file fish.... it may be that they don’t like sps as much as the literature says so, I always wonder where they get the info to right the reports... we didn’t keep angels with sps for years because of the “literature”. I wonder if anyone actually observed the file fish biting chunks of sps in the wild lol. I used to have a 4 spot butterfly which according to the “literature” apparently pocillipora is a particular favourite... never went near mine...I want to do a post on the file fish but I wouldn't be able to keep up!
It really is swimming around like a community fish, early doors still, I really need to get a good pic of it and it's little pudgy tummy.