My OSFF eats most anything and loves OSI spirulina flake food. He eats mysis like spaghetti, which I find funny.
I keep mine in a 90 gallon mixed reef tank with other tank-mates. However, I completely agree with keeping them isolated until they start eating food from the water column.
It seems like a switch goes off in their head. One day, they completely ignore every piece of food floating right by their heads. The next day, they are vigorous eaters and can keep up with any other fish.
As long as the fish has enough weight to make it through this period, I think it has a decent chance at survival.
I keep mine with three ignitus anthias, two ocellaris clowns, a tailspot blenny, a green mandarin dragonette, and a convict tang. Even with all the activity during feeding time, my OSFF gets plenty of food.
I also keep LPS, a clam, SPS, a spiral black coral, gorgonians, zoas, and a soft coral. My filefish completely ignores everything except the SPS.
My SPS rarely have PE, except for my pocci and birdnest. However, they are all still doing very well.
Now I just need to find a healthy female OSFF
