"Longtail stingray" may also refer to Dasyatis thetidis or Himantura uarnak.The longtail stingray (Dasyatis longa, often misspelled longus), is a species of stingray in the family Dasyatidae, found in the eastern Pacific Ocean from Baja California to Colombia. It inhabits sandy habitats down to a depth of 90 m (300 ft).