Yes, court jester gobies (Trimma okinawae) are hardy fish that can tolerate a wide range of water conditions. They are native to the reefs of Okinawa, Japan and have been successfully kept in captivity for many years. Court jester gobies are small fish, only reaching a maximum size of about 1 inch (2.5 cm). They are brightly colored with orange and white stripes and have a distinctive black spot on their dorsal fins. These little fish are very active and make great additions to nano reef aquariums.