do fish know the difference between Aquacultured and real live rock?

:fish:Every fish and anemone I add to my tank ends up in the same spot in my tank. Only thing I can figure is that the live rock there is not aquacultured and has lots of growth it came with on it? The other rock is either aquacultured or has no growth. The first clown i put in, went straight to it. Then the anemone, followed by the second clown, followed by the tang (though it has its own hiding spot behind the rocks in the back of the tank). Then the damsels i put in are there now too. They all just hang out there all day. Is it water flow and lighting or sand area? Its just too bad there's plenty of space in the rest of the tank. Any thoughts or suggesti