Fish ID?

The fish at the top appears to be a Bluespine Unicornfish (Naso unicornis)

The main fish is a surgeonfish in the genus Acanthurus, not a unicornfish, the aquarium has Acanthurus dussumieri though that doesn’t seem right. There is a threadfin butterflyfish Chaetodon auriga, Sergeant-major Abudefduf saxatilis and an elegant unicornfish Naso elegans in the bottom right. The Naso on the left may be an elegans or it could be a Naso lituratus.

Topmost fish and fish on the bottom left are both Acanthurus mata