I had the exact looking species ray before... it was sold to me as a false Yepezi from Peru. Heres a few links with pictures of my old male ray. http://www.monsterfishkeepers.com/forums/showthread.php?91443-Yepezi-Ray-or-not-ID!&highlight=
The rays pattern had many cool designs and smiley faces in the spots and stripes.. example
http://www.monsterfishkeepers.com/forums/showthread.php?109820-Kool-Aid-amp-My-Stingray&highlight=
Regardless of this species name, it is a great looking ray, congrats on the pickups. Wish I still had mine.