Australian greenhouse - large marine aquarium

This aquarium was the first built (built for he opening of the greenhouse in 2002) and the largest of the three tanks in the greenhouse.
It is filled with about twenty species of tropical fishes.

I can see the following:
Bannerfish
Batfish
Butter Bream (Diamondfish)
Three-stripe Humbug
Two species of Clownfish
Sailfin Tang
Blue Tang
Powder-Blue Tang
Convict Surgeonfish
Orange-Band Surgeonfish
Unicorn Surgeonfish
Foxface
Threadfin Butterflyfish
Blue Devils
and there's something pink and yellow in the rocks that could be a Royal Dottyback (Pictichromis pacagnellae)

Thank you for your help Hix.

There is a signage for the different species of fish but I don't take photo of it. Next time !