It will vary. Sources suggest that in human care, they can live between 5 and 10 years.
As per Nationalgeographic.com, their average life span in the wild is 15 to 25 years.
Stingrays are commonly found in the shallow coastal waters of temperate seas. They spend the majority of their time inactive, partially buried in sand, often moving only with the sway of the tide.
Stingrays will eat a wide variety of foods. Maintaining a varied diet is extremely important in captive animals, as monocultural diets incur a risk of nutritional deficiencies. Stingrays are very active, and should be fed at least once a day, preferably twice or even three times daily.
The daily diet can be varied in order to create some environmental enrichment as well as balanced nutrition for the rays. Learn more about how to feed stingrays at Petcaretips.net.