Naso Tang

Snapshot: Also known as the Orange-spine Unicorn Fish. This majesty has a light to dark gray body, with a splash of yellow on the forehead. Its standout feature is its orange lips!
 
Other tidbits: Can grow up to a whopping 45cm or so! Range extends from the Red Sea through the Indian Ocean to the eastern Pacific.  
 
Bare bones must know: Live-rock fish-only system, or reef aquarium with plenty of swimming room. Spacious size aquarium needed.