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.
ttner – – unter Bildergalerie viele Bilder von Raubwelsen, Piranhas und Rochen Amazon
Foto: George Shark Aquarium Foto: Daniel Matthäus Amazon Exotic Import Was weiss