I can't find my fish identification book at the moment and was planning on looking for a goby tomorrow at the Aquarium Showroom. Is the Diamond Watchman Goby the one that burrows a hole and stays in one spot? I believe there is another, very similar looking goby that moves around the sandbed more but can't remember the name. I am kind of looking for the one that moves around more to keep the sand bed looking nice. I know there are people that don't like them kicking up the sand but I don't mind 