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The chin markings look like those of A. sp. Black-chin more than A. cacatuoides. I think more photos of this fish are needed to be sure of the identity. It certainly is not A. bitaeniata.
The chin pattern seems to be more extensive on the fish pictured than is seen on A. cacatuoides. For those who own Römer's Atlas you can compare chin patterns of A. cacatoides & A. sp. Schwarzkinn/Black-chin (erroneously identified as A. juruensis) on page 79. I still am not certain which species is in the picture. A photo in fright pattern (or after being in the dark) would show whether or not the lateral band continues into the tail or if there is a separate caudal spot. Like A. juruensis, A. sp. Black-chin has a separate caudal spot. Right now I'm leaning toward it being A. cacatuoides with an unusually expansive chin pattern.