@justinl, I googled more information about the pairing of neon gobies:
http://www.advancedaquarist.com/issu...3/breeder2.htm
If you look on Reefkeeping.com as well, some reefers briefly talk about neon goby pairs in their TOTM article. I would say definitely try for a neon goby pair, as I've yet to experience a boring pair of organisms.
http://www.reefkeeping.com/issues/20...totm/index.php
If a pair does form, remove the loner as the pair will start to defend their marked territory.