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
Hutt River (South Australia) Hutt River (South Australia) The Hutt River (Kaurna: Parriworta) is a river located in the Mid North and Clare Valley regions of the Australian state of South Australia. The river rises near Sevenhill and flows generally in a northern direction through the town of Clare and through good farming and pastoral country before reaching its confluence with the Broughton River south of . The river descends over its course. The Hutt River catchment has five catchment sub-regions; Hutt River, Stanley Flat, Armagh Creek, White Hutt Creek, and Bungaree. Armagh Creek is the most significant tributary. The twin of the Hutt