my $.02 -
Gramma loreto or royal gramma
http://www.fishbase.org/Summary/Spec...ry.php?id=5281
click on the picture for other views
http://www.aquahobby.com/marine/e_loreto.php
http://www.oceanlight.com/lightbox.php?sp=gramma_loreto
I had great success with mine. Very colorful - staked out a "cave" in the live rock and hung out there - almost always visible. Would come out on occasion, esp. feeding time, and to defend its cave - rushing out, mouth open, etc. but only threat behavior. No one else paid any attention.
Would sleep by hanging upside down in the cave. Great looking fish, and hardy.