A few years back there was an acrylic aquarium manufacturer that had an aquarium with flow through 2 tubes connecting the tanks to one another. They didn't make anything nearly big enough for these beasts (It think the biggest was 4 feet), but I've often pondered how cool this design would be for jumbo cichlids in a much larger configuration. The tubes would enable breeding, but easily keep fish from getting at one another if they were large enough.
