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53772 Potamotrygon brachyura (Günther, 1880) Potamotrygonidae River stingrays Potamotrygoninae Myliobatiformes Elasmobranchii Short-tailed river stingray South America: Paraná-Paraguay (including Cuiabá river in Brazil), Uruguay basins and Argentina (Ref. 58839). Formerly classified as data deficient in the 2000 IUCN red list of threatened species (Ref. 36508). MOVI 31307 1999 Potamotrygon brachyura