Help me identify this tang please

[gmigmi]

I got this tang last week, it was sent here from Indonesia as "Acanthurus Xanthopterus albino" obviously its not albino since its eyes are black, but I would like to be sure if its Acanthurus Xanthopterus or perhaps some other tang.
He is aprox. 4.5-5 inches
This is the best pics I managed to get from it in the quarantine tank.

 

[jaa1456]

Form the white part on its tail it looks like a really pale Blochii tang. Ot it could be the tang you mentioned and just needs to color up a little.