Wheeler's Watchman Goby

(Grows to- 3.5")(Reef?-yes)(Tank size- 20gal. or more) Needs sand, live rock, variety of foods.    Shy,  gentle natured and reclusive.  Keep in peaceful community tank only.  Goby will take care of pistol shrimp while pistol shrimp takes care of making tunnels so they have a home to live in with an escape route if needed.  (Amblyeleotris wheeleri)