Unicorn. I spent some time watching him before I bought him. Very pretty fish, was eating at the store and swimming very gracefully and just seemed un-stressed.
Yes, it is!. I thought it was vlamingi but it was labeled unicorn so I didn't question it. Found this page from a search, scroll down to see the juv. Thanks for the clarifacation!
Yes it does.
The forehead of the adult Vlamingi forms a bulbous rounded protrusion, much less of a horn than many of other unicornfish, and they have very tall dorsal and anal fins.
It's amazing how many names they can give a species of one particular fish.