From what I've heard, most ocellaris or false percs don't really go to anemones.
I have 2 anemones which used to host 2 clarkis. Clarks got mean as they got bigger, so I traded them for a small maroon, who dove in to both anemones, back and forth from one to the other.
I have 2 ocellaris that never went into either anemone until the smaller one grew curious of the maroon.
Now he goes into one of the anemones, but does'nt live in it like the maroon.
The maroon as well as the clarkis also spot fed my anemones.
They'll grab brine or mysis or even seaweed and spit it into the anemones. Very cool to watch!
Good luck to you!