I'm not experienced enough to tell. Does this look like ich or velvet? I'm leaning towards velvet from looking at other photos. I've got him and a Yellow Watchman Goby in a 20g QT. Dosed a 1/4 dose of copper power so far. Both fish were clean when I got them yesterday. The Goby eats if I squirt the food right at him but he's too timid to come out too much around the CBB. But the CBB eats like a pig thankfully. Some video is uploading.