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Recommended reading
Andrea Ferrari and Antonella Ferrari
Creative Techniques and Camera Systems for Digital and Film
360 pages, 400 colour photos. Nautilus Publishing Sdn Bhd Distributed by NHBS Softcover | 2007 | £24.99 | approx. $50/€33 ISBN-13: 9789832731023

Freshwater Stingrays

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.
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From Wikipedia, the free encyclopedia

Freshwater stingrays of the genus Potamotrygon are sometimes kept as exotic aquarium fish; though freshwater stingray of other genera do appear in the trade, most are from this genus. They are best kept with a deep, sandy substrate, in which they bury themselves, often with only the eyes visible. They are not territorial with other animals and can be kept in groups, provided a large enough aquarium is provided. They are carnivorous bottom feeders and require strong filtration as they are rather sensitive to water conditions.[1] Many species of stingray have been bred in captivity,[citation needed] and males can be determined by the presence of claspers as in other Chondrichthyans.

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