Believe I've identified through research Atlantic Blue Tangs, Foureye Butterflyfish, Blue Reef Chromis, and Vagabond Butterflyfish in this tank, but I'm no expert so I'm not sure and that isn't all of them.
There's also ocean surgeonfish, Acanthurus bahianus, and doctorfish tangs, Acanthurus chirurgus, in addition to what's been listed here or under other pictures.
The vagabond butterflyfish is actually just the reef butterflyfish, right? Or does this tank have both? Vagabonds are Indo-Pacific so they would be out-of-place.