WWF has produced a new documentary on the Madeira River:
http://www.worldwildlife.org/who/media/press/2010/WWFPresitem15303.html
Please also check out the latest installment of “Monster Fish” Monday August 2, 2o10 at 10pm.  The episode “Jungle Catfish” focuses on the Rio Roosevelt and Rio Madeira. 
Dr. Zeb Hogan teams up with experts to explore a forbidding 400-mile-long river: the Rio Roosevelt. They’ll have to […]

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 http://www.bloomberg.com/news/2010-07-28/giant-stingray-350-kilogram-catfish-threatened-by-mekong-dams-wwf-says.html
 And the report can be found here:
 http://assets.panda.org/downloads/new_river_of_giants_report_14_may_2010_web_version.pdf

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