| Potamotrygon, Batoids, Potamotrygonidae, Porcupine river sting, Stingray|Raspy river stingray Wikipedia
The raspy river stingray, mosaic stingray or arraia (Potamotrygon scobina) is a species of freshwater fish in the Potamotrygonidae family. This stingray is endemic to the mid and lower Amazon basin (Manaus to Belém) in Brazil. It reaches up to 69.1 cm (2.27 ft) in disc width and 132.5 cm (4.35 ft) in total length. It is fairly common, but threatened by habitat loss.