Yeah he is a small one. As for not being healthy I don't think that's it. He is very active and even playing in the flow of my powerheads during the day. He is eating mysis shrimp really well twice a day and the rest of the day is eating pods off the glass. I also have a algae sheet clipped in here but he's not all that into it yet. I clean/water change my tank once a week so will also clean the mesh then too. I can't see a way that he can get in there now. So do you think he's scales will grow back?