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Rays
Freshwater Stingrays
Standfirst:
Potamotrygon is a genus of freshwater stingrays native to the rivers of South America. As of July 2006, FishBase lists seventeen distinct species. The type species is P. hystrix.
From Wikipedia, the free encyclopedia
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New species of eagle ray discovered
Using DNA techniques scientists have discovered that in fact the eagle ray is made up of a number of at least two and possibly more species and sub species.






