Having the same color combination as the Dalmatian dog (black and white), the Dalmatian Molly is an interesting molly strain with beautifully patterned scales. They grow a bit bigger than the common black molly, averaging a little under 5 inches. They require a large tank with plenty of swimming space, well-oxygenated water, and live plants. As with other mollies, make sure you set up a heater for your tank and a filter to help keep the water at optimal levels.