IMO, it looks great! Yes, it does look crowded, but so does the reef. Plus, a lot of his fish are just large, giving it that crowded appearance, but a bunch of smaller fish to fill up that tank would make it look worse. Yes, I most certainly hope thats at least a 300 gallon tank, and yes I hope that he has good filtration, because the majority of those fish are angels, tangs, or butterflys. JMO
~Emperor