Gobies are a common community fish that will often times command their territory. There are many different kinds of Gobies that swim at the top waters or down in the sand bed. Gobies can be kept together as long as they are different kinds or bonded pairs. Some of these particular fish have a symbiotic relationship with Pistol Shrimp. Gobies are easy to care for and stay relatively small. They are not shy and will grab your full attention with their playful demeanor.