Help identifying a Tang

[Myka]

Here's a thought...try turning the lights on in the middle of the night and see what color he is then. He will probably be pale and you may be able to see if he has that crescent shape behind his gills that Lieutenants have.

[H2o2]

Will do as I normally get home after the lights are out but only have 1 hand to work with other one is holding a glass of wine