Xingu River ray mostly brownish-dusky (large white center to underparts of "P. henlei"). Compared to "P. albimaculata", "P. leopoldi" has fewer and larger yellowish-white spots above. 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
Xingu Indigenous Park April. The headwaters of the Xingu River are in the south of the park. The area covered by the park was defined in 1961 and covers parts of the municipalities of Canarana, Paranatinga, São Félix do Araguaia, São José do Xingu, Gaúcha do Norte, Feliz Natal, Querência, União do Sul, Nova Ubiratã and Marcelândia in the state of Mato Grosso. The national park was created after a campaign by the Villas-Bôas brothers for protection of the region. An account of the exploration of this area by the Villas-Bôas brothers and their efforts to protect the region is documented in the