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
American River, South Australia of tourism at American River. Nils Ryberg, a Swedish born immigrant, settled at American River in 1884, and ten years later built the original "Ryberg House" on the site of the present Kangaroo Island Lodge, exclusively for tourist accommodation. Ryberg added to the building over several years, before selling to John and Valerie Linnett in 1913. Ryberg House was completely rebuilt in 1928, and remains today. Fishing trips were an integral part of the business, with three boats, "Warrigal", "Linnette" and "Linnette 2" comprising the fleet which operated until 1985. The business was operated until John Linnett's death in 1955,