I have 2 Large Engineer Gobies 12-14" easy.... Free to a good home. Currently they're in my sump, awaiting a new home. They are communal fish and do best not split up. Please know that they are great, reef safe fish, but will move sand and substrate until they make their burrow and get content with their new home. Once they establish that, they're pretty calm in the reef tank. If interested, let me know.