Ocellate River Stingray

The Oscellate River Stingray (Potamotrygon motoro) is a freshwater ray in the Potamotrygonidae family of stingrays. It is also known as the Peacock-Eye Stingray or the Black River Stingray.

The Oscellate River Stingray has a flat, round-shaped, beige or brown body with numerous yellow-orange spots that have dark rings around them. Its underbelly is smooth and white. Its eyes are located on its back and are raised. 

Oscellate River Stingray

It grows up to 50 centimetres (20 inches) wide and 100 centimetres (39 inches) long. 

The Oscellate River Stingray is native to the Rio de la Plata, Amazon, Mearim, and Orinoco river basins in tropical and subtropical South America. 

It prefers rivers with sandy or muddy bottoms. It often buries itself in the sandy soil to avoid predators. 

It feeds on the bottom, so it is a benthic feeder. It feeds mainly on crustaceans, such as shrimp and crabs. It also eats worms, cephalopods, and small fish. 

The Oscellate River Stingray is oviparous. The female lays eggs in capsules in the sandy river bed. The eggs hatch into young, called pups, after 5-6 months. The pups are about 11-12 centimetres (4 inches) at birth.

Oscellate River Stingray
Oscellate River Stingray
Oscellate River Stingray

[Location of photographs: Aquarium de Paris-Cinéaqua]

Photographer: Martina Nicolls


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