Potamotrygon – Literatur http://www.potamotrygon.de/literat.htm
Ammonia and urea fluxes in Potamotrygon sp, a freshwater stingray of the Amazon.
Ammonia and urea fluxes in Potamotrygon sp, a freshwater stingray of the Amazon.
In June 2000, The Shedd opened a new Amazon exhibit.
Böttner – – unter Bildergalerie viele Bilder von Raubwelsen, Piranhas und Rochen Amazon
Foto: George Shark Aquarium Foto: Daniel Matthäus Amazon Exotic Import Was weiss
New Genus and Species of Freshwater Stingray (Potamotrygonidae) from the Lower Amazon