Ive had the yellow watchman for about 5 months, but unfortunately I really dont have a lot of time that I can sit and enjoy my tank to have really seen any relation they may have. I guess I will keep him in their and maybe they will hook up. What kind of behavior would indicate they have become freinds. Will they hang out in the same area? Will the shrimp ever ride the goby or anything crazy like that? The yellow watchman is the only fish in the tank, the tank is a 37g tall with about 50# lr, 3" DSB, and 3 65w pc's.