Xingu River ray Xingu River ray The Xingu River ray, white-blotched river stingray, or polka-dot stingray ("Potamotrygon leopoldi") is a species of freshwater fish in the family Potamotrygonidae. It is endemic to the Xingu River basin in Brazil and prefers rocky bottoms. It is sometimes kept in aquaria. "P. leopoldi" reaches up to in disc width, in total length and in weight. Females grow larger than males. It is closely related to the similar "P. henlei" from the Tocantins River basin and "P. albimaculata" from the Tapajós River basin. Compared to "P. henlei", "P. leopoldi" is deeper black above and its underparts are
South Fork Clearwater River South Fork Clearwater River The South Fork Clearwater River is a long river in north-central Idaho in the United States. Draining about , the South Fork joins with the Middle Fork Clearwater River to form the Clearwater River, a major tributary of the Snake River. The river is formed by the confluence of the American River and Red River in the Nez Perce National Forest at an elevation of . The roughly American River rises at and flows generally south to the confluence, while the northwest flowing Red River, rising at , is about long. The American River is sometimes