I bought a Diamond Watchman Goby about a week ago. In that week, it came out of the cave once and maybe popped its head out once or twice. It is very shy. To help him out, I bought a Tiger Pistol shrimp couple days ago and I dont know of they found each other yet, but I cant see either of them...I spent 40 for goby and 40 for pistol, and I cant even enjoy them. Do I have any option on getting them out and about?