Surgeonfishes

I see this hybrid(?) of
Powderblue Surgeonfish
Acanthurus leucosternon
and
Whitecheek Surgeonfish
Acanthurus nigricans every year at Bias Tugal

But in the Blue Lagoon there is the normal
Powderblue Surgeonfish
Acanthurus leucosternon
with a white throat

Whitecheek Surgeonfish
Acanthurus nigricans
Blue Lagoon

Blueline Surgeonfish
Acanthurus lineatus

White-freckled Surgeonfish
Acanthurus maculiceps,
Tulamben

Blackstreak Surgeonfish,
Epaulette Surgeonfish
Acanthurus nigricauda

Orange Shoulder Tang,
Orangespot Surgeonfish
Acanthurus olivaceus,
Blue Lagoon

Convict Tang,
Convict Surgeonfish
Acanthurus triostegus,
Blue Lagoon

Yellowfin Surgeonfish
Acanthurus xanthopterus,
Tulamben

Bristle-toothed Tang
Ctenochaetus striatus?
Blue Lagoon

Blue Tang
Paracanthurus hepatus

Spotted Unicornfish Naso brevirostris
like a shadow below the Blue Unicorn

Blue Unicorn
Naso caeruleacauda

Orangespine Unicornfish Naso lituratus

Unicornfish
Naso unicornis

Bignose Unicornfish,
Vlamingii Tang
Naso vlamingii, Tulamben
Gets pale at the cleaner station.

Brown Tang
Zebrasoma scopas

Sailfin tang
Zebrasoma veliferum

Moorish Idol
Zanclus cornutus