just wanted to add my experience with my Percula clown fish.
I've had a p air for about 2 months now, they' ve always been good eaters , whatever I put in the tank they'll eat. And they always poke they're heads out of the water when I open the lid.
The larger 1 likes to swim on it 's side in the current at the very top of the tank. They used to sleep on the bottom of the tank until last week I put a backing picture on the back of the tank. On 1 side of the backing is a picture of a huge anemone and they've been acting like they 're trying to get into the picture of the anemone. Now they sleep up in the top back corner of the tank by the anemone picture & they lay side ways. Very strange.
Talk about being really scared when I first notice them in the morning. But when I turn the light on in the room they swiming around like normal.
Mine are also with a few Damsels but the clowns don't really bother them unless they get too close, then they just shoo em' away.
Anyway , just wanted to share that, these are strange fish indeed.