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Potamotrygon castexi
 Castello & Yagolkowski, 1969
  Family: Potamotrygonidae (River Stingrays) / Order: Rajiformes (Skates & Rays)
  
  Common names Distribution Environment Fish  
  UK: Vermiculate River Stingray
DK: (Flodpigrokke)		 South America:
Rivers Amazon & Paraná basins		 Freshwater
25-30ºC / pH 6-7½		 Max Size: Ø 60 cm