My yellow watchman goby is breathing fast (ca. 120 breaths per minute) , spreading the gills and using its mouth. It has been doing it for about a month now, with no change (better or worse). It is otherwise completely fine, as are all other fish, corals and inverts in the 29 gallon tank (which makes me believe the water is fine). The goby watches out for its pistol shrimp, goes like crazy after the food, and is extremely quick to disappear in the burrow when sensing "danger". The fins are intact, and there are no external signs, spots, or marks of any kind. There was a tiny red dot on one side, but it went away within 3 days. I suspected flukes and treated the tank twice with PraziPro (2 sets of 2 treatments, each 6 days apart) with a little more than the recommended dose, but without any effect. My hitchhikers (bristleworms and tiny featherdusters) also survived the PraziPro. I am now wondering if I should try to catch the goby, do a FW dip and put it in a hospital tank. This will likely put a lot of stress on the little guy and I have no idea what may be wrong. So, to treat or not to treat, that is the question?