i have this purple flame goby/ fire fish but he is almost always hiding. he was the first fish in the tank and i dont really have anything that is aggressive. i have two clarkii, blue spot goby, square spot anthius and a pajama cardinal. noone really bothers him but he always darts back in "his" rock if anyone comes near him. ive had him for about 6-7 mos and he has always been like this since i put any other fish in. he is really pretty and i wish there was a way to get him to come out more.