Well Ive got a hitch hiker pistol shrimp on my live rock, and I wonder why type of goby I can get that would pair with him. I seen him this morning before lights came on, working like a little bull dozer under a rock. Will a yellow watchman work? Also If I get a yellow watchman is it better to buy the ORA Captive-Bred or just a regular one. Liveaquaria has both.