I've never kept stingrays but have always admired them (and may possibly get into keeping them at some point later), here are some nice good sized ones at my LFS here in Thailand I thought I would share. They're about 16"-20" I'd estimate, and being sold at 14,500 Thb (could probably negotiate down a bit), or ~US$450 each (pups I've seen for closer to about US$100-$150). This is pretty expensive by local standards, most regular fish in the shop would be 100-500 Thb, but still cheaper than most Arowana.
Here's a lower-rez vid sent to me by the shop when I just messaged them about stingray price yesterday:
And here's a better close-up video I took myself a couple of months ago (and have posted elsewhere on MFK but referencing the large Flagtail), same fish I think but not sure:
Here's a lower-rez vid sent to me by the shop when I just messaged them about stingray price yesterday:
And here's a better close-up video I took myself a couple of months ago (and have posted elsewhere on MFK but referencing the large Flagtail), same fish I think but not sure: