Long-tailed River Stingray
Plesiotrygon iwamae
- Vulnerable
- Card rarity: Rare
- Sharks and rays

The long-tailed river stingray or antenna ray is a species of freshwater stingray in the family Potamotrygonidae. It is found in the Amazon basin in South America, ranging from Ecuador to Belém. It lives in the main channel of the Amazon River and lower parts of its major tributaries.
Classification
- Class
- Chondrichthyes
- Order
- Myliobatiformes
- Family
- Potamotrygonidae
- Genus
- Plesiotrygon