China Wrasse

Snapshot: What truly sets this fish apart is its striking contrast of pristine white adorned with vibrant blue dots, topped off with a regal bluish-black front half.
 
Other tidbits: Can grow up to 22cm or so. Native to the waters of the Red Sea and the Indian Ocean. 
 
Bare bones must know: Live-rock fish-only system, fish-only system, or reef aquarium. Mature and well established aquarium. Thick, sandy substrate. Expert aquarists only.