I am looking for advice and opinions about teacup stingrays (Potamotrygon reticulata). I am the manager of a University Live Fish Collection. I have been researching teacup stingrays and have found very mixed opinions. I know they prefer a pH of around 6-7. And need excellent water quality. Water quality isn't an issue and pH shouldn't be either. But I have read about people saying that teacup rays are sensitive and often have trouble feeding them. What are your opinions as to if they are hardy/sensitive, and dietary flexibility? I want to make sure I do my homework before bringing an animal into a lab. Opinions and experiences are appreciated.