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 American River South Fork of the American River. These BLM managed areas are part of a 20-year joint effort with the American River Conservancy to protect the habitat and beauty of the South Fork of the American River. Accessible via Cronin Ranch, Magnolia Ranch and Salmon Falls the trails are "stunning every season of the year. Winter rains bring lush green landscapes that cultivate spring’s abundant wildflowers. The summer’s golden hills contrast with the oak woodlands that lead you through fragrant sage-covered ridge tops. The fall colors reflecting against the river take one’s breath away. The trail represents the foothills’ various healthy