Dimension Films announced today that it is partnering with Starz Digital Media to offer up the sequel to the fish-ploitation pic Piranha 3DD on-demand and online in places like Amazon, iTunes and Xbox Live the same day as its theatrical release Friday. It marks the first time a 3D movie is taking the increasingly common day-and-date distribution route. Beginning tomorrow, Piranha 3DD will be available for a 48-hour VOD rental; $6.99 in standard and high definition, and $7.99 in 3D. The first film in the franchise made $25M domestic and $83.2 globally when it was released in August 2010. The sequel stars Danielle Panabaker, Matt Bush and David Koechner.