Considering setting up a 75g goldfish tank, black mores and other fancy varieties. I was wondering about tankmates. My tanks are in the basement, it's unheated, and the tank will be unheated, so colder water fish are essential. I've heard that the weather loach, or maybe dojo loach, and the hillstream loach are coldwater, as well as the white cloud, american flagfish, some danios, and some barbs. Has anyone ever kept these fish long term in coldwater tanks? Does it affect coloration, behavior, feeding or breeding in any of these fish? I do not want to keep fish in a tank if they merely survive, I want them to thrive.
Kurt
Kurt