Plesiotrygon, which is a big genus of freshwater stingrays in the family Potamotrygonidae, and under the order of Myliobatiforme, is known to be endemic to the Amazon basin, an area of about 6,300,000 km (2,400,000 sq mi).
Plesiotrygon, which is a big genus of freshwater stingrays in the family Potamotrygonidae, and under the order of Myliobatiforme, is known to be endemic to the Amazon basin, an area of about 6,300,000 km (2,400,000 sq mi).