It is one of these two Amblygobius phalaena or Amblygobius semicinctus
The common names are misused for both fish: Sleeper Banded Goby, also known as the Brownbarred Goby, Bullet Goby, and I have seen Dragon Goby used also.
Thank you! I just need to find out how to take care of him. All of you on this forum are amazingly helpful and friendly. It makes the trips to the LFS a little less scary..