well he is located in montreal but he gets his fish from all over the world but manly rio negero I believe here is the site bu for the stock list I have you need to email him www.belowwater.com
Magdelenae come from the Magdelena river in Colombia.. My guess is it will be an unidentified brown ray from Colombia, more than likely Orbignyi. P. Magdelenae is an actual species scientifically, but I have never seen a confirmed wild specimen. Mikofish.com has a picture of one from Venezuela.. ?