Activity and habitat use of two species of stingrays (Myliobatiformes: Potamotrygonidae) in the upper Paraná River basin, Southeastern Brazil. Neotropical Ichthyology, 10(1), 81–88
Ingestion of catfish by freshwater stingray: possible mistake or inexperience. Biota Neotropica, 9(4), 265–267
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Registro de ocorrência de duas espécies de potamotrigonídeos na região do Alto Rio Paraná e algumas considerações sobre sua biologia. Biota Neotropica, 7(1), 1–4
DOI: 10.1590/S1676-06032007000100023
Preliminary data on the feeding habits of the freshwater stingrays Potamotrygon falkneri and Potamotrygon motoro (Potamotrygonidae) from the Upper Paraná River basin, Brazil. Biota Neotropica, 7, 221–226
DOI: 10.1590/S1676-06032007000100027