Yet these behemoths’ most puzzling feature is a whip-like tail that can measure as long as the rest of the fish’s body. Why mantas and related rays have such long tails has long been a mystery.

The giant freshwater stingray may be the world’s largest freshwater fish ... to gray in color, the giant stingrays are wide and flat in form, and they sport long, whip-like tails.

Scientists found a “large”-eyed creature with a colorful tail on a rock in Cambodia and discovered a new species, a study said. Google Street View January 2023 ...