I added fish to my 29 gal nano about a month ago. In the beginning the YWG and the Six Spot Sleeper Goby hung out together in the same cave. The other day I was doing some tank mainetance and discovered the YWG in the refuge middle chamber. He then swam to the return chamber and it took me a while and lots of poking him to finally catch him with a makeshift net. Ever since that day (4 days) he has been at the top of the water column either swimming around in circles along with the wave maker water flow or actually half sticking out of grill of the water input chamber. When I touch him he easily swims away but soon enough he is back at the top? All water parameters are fine. Any ideas, suggestions, comments. I've seen the Orchid Dottyback harass him a few times and he doesn't seem to be getting along with the other goby. What should I do? I feel like he is slipping down hill. Thanks