Well, looking at that tank I can honestly say with 100% certainty that you don't have a problem with your clowns hiding all the time!
I'd have expected them to be cowering in a corner somewhere trying to hide behind one another for security.
Yet they are as active as hell and look as happy as Larry. I just don't get it. Maybe it's because of the size if them and that you have a big shoal.
Beautiful specimens by the way. Can I be cheeky and ask how much you paid for them big boys?