Im torn between an ARTC and mystus wyckii. Im planning to setup a tank for one of these guys, but is there anyway to keep them with tank mates? What about a large arowana? Or even something real aggressive like a red devil? I had a RTC with red devils, and he never dared tried to eat them because they kept him in check by pecking him between the eyes. Has anyone ever done this succesfully, or if I get one of these guys I have to keep them alone?