Freshwater Stingrays

Ive kept both species of ray. Id say stay with the teacups to start as the motoro are very pricey. Im actually ordering a few motoros and mabey some leapordi's in for myself as well as a dozen or so Vampire Tetras,(by far one of the coolest fresh water fish in the world)
I thought I might as well start up another fresh water tank, its been awhile.