Santosa Oceanium Singapore, Open Ocean tank. Screencap from a video shot august 2025. This tanks holds many different species of stingray. These 2 seem to be U. granulatus in my opinion, but I'd love to hear what others think.
Not sure on the left one, but I don't think U. granulatus as I would expect that species to have a mostly white tail. The skin flap on the tail of the right one makes me think Taeniurops meyeni.