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) of Clare. In late May 1839, based upon information supplied by Hill, the explorer Edward John Eyre followed in Hill's footsteps, tracing it downstream to its junction with the Broughton River. 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.