I'm new to this species, but have found that mine likes shrimp, squid, silversides, krill, and PE mysis. Mine is a rescue and is as white as snow. I'm target feeding it a small amount daily. If yours isn't bleached, less frequent feedings would be appropriate. From what I've read, some crispa owners don't target feed their anemones at all, just letting them catch whatever they snag when the fish are fed. Others feed weekly or so.
Hopefully others with more H. crispa experience will chime in.
It looks great, much better than mine did -- it was tiny and white when I got mine.