Black Moor has swim bladder disease. It won't eat, looks like it is getting better one minute, then is barely moving the next. What to do
The other goldfish is doing great. They were given to me and I do not know much about them. The tank buddy has the long flowing fins as well, but no bulging eyes and more gold scales on it. The black moor that is sick keeps floating to the top, belly side up. It seems one minute the fish can't control it and tires of fighting it and hangs out like that for a long time. Then the next time I look, it is swimming around pretty well, but is still floating to the surface.