those are really nice gobies. My randall's pawn don't move much and hide all the times. But lucky he though a hole on the side and I can peak at him when he sleep..
ctxmonitor- thanks, these guys hide also, only come out when i feed. I got to add more fish to the tank so they would hopefully feel more comfortable and come out.
nanoreefer- thanks, supposedly they are a pair. Only difference i can see is one of them has red tips on its pectorial fin.