I have had one for a year. They are really timid fish and are supposed to do well in pairs. Getting them to eat is the difficult part. If you got them eating, then it sounds like you're off to a good start. What are they eating? Mine started on tubifex and then moved on to everything else. Another thing that is difficult can be their timidity. I have mine in with a pair of Ocellaris, a peppermint shrimp and cleaner shrimp, the goby is at the bottom of the pecking order. I might worry about the Maroon clowns in your tank.