As false percs are becoming more and more tank raised, chances are you've gotten a pair that have never seen an anemone before.
I have a pair of false percs that I've had for almost a year. Finally a week ago, I noticed that the female has figured it out. She's been playing in my 3 rbtas ever since, but the male has yet to figure it out.
The clowns sleep together in the opposite corner of the tank from the nems, but during the day, the female is all up in the nems and the male hangs out under the overhand of my orange monti cap.
It's weird that they sleep next to each other yet away from the anemones.