03-17-2012, 02:11 AM
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Cool article. One thing I think many aquarists (and people in general) mistake about Amazonia is that they are very slow flowing rivers. The Amazon (that really is not as long as the encyclopedia's tell you) is wide, bendy, and slow moving. My favorite rivers are tributaries of the Amazon, Rio de Negro (Black River) and the Vaupes River. My wife is Colombian so I have had the opportunity to go to South America a number of times, and have taken river boats down these areas. The city that I would assume most of our Amazonian fish come from is Manaus, Brazil, the "Paris of the Jungle", pretty interesting place, though I know that there are now restrictions on fisheries and the deportation of native fish.
I kind of went on and on there, but what I have meant to say is that Amazon fish are used to slow moving currents and floodplains, so do not put powerheads in your South American tanks. Here is a picture/example of why.