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Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Order: Myliobatiformes
Family: Potamotrygonidae
Genus: Plesiotrygon
R. de S. Rosa, Castello & Thorson, 1987
Type species
Plesiotrygon iwamae
R. de S. Rosa, Castello & Thorson 1987

Plesiotrygon is a small genus of freshwater stingrays in the family Potamotrygonidae endemic to the Amazon basin in South America, with two recognized species:[1] Their maximum disc width ranges from 25 to 58 cm (10–23 in), but both species are very long-tailed.[1][2]



  1. ^ a b Froese, Rainer, and Daniel Pauly, eds. (2013). Species of Plesiotrygon in FishBase. August 2013 version.
  2. ^ De Carvalho, M.R. and M.P. Ragno (2011). An unusual, dwarf species of Neotropical freshwater stingray, Plesiotrygon nana sp. nov., from the upper and mid Amazon basin: the second species of Plesiotrygon (Chondrichthyes: Potamotrygonidae). Papéis Avulsos de Zoologia 51(7): 101-138.