User blog comment:Dryst97/who do you think has the rarest devil fruit?/@comment-112.198.79.75-20100503140150

exactly only one at a time...pls read about the devils fruits before trying to comment...While it hadn't been yet explained how to acquire that knowledge, according to Oda in a SBS, the same power of a Devil Fruit can exist more than one time (but not at the same time)*


 * from one piece wikia