James
It's called a Twinspotted Wrasse. Pretty cool Hog fish as when it's fully grown it's only 4"-6" and has the nice pointed tail. They show up from time to time around me, NYC, and usually stay in the tank forever as their colors aren't the best, the picture is a close up photo, and most people aren't interested in them as there are a # of other similar fish with better colors.
Michael