Originally Posted by moomoofish
Awesome, two more questions for ya since I can't really find a reliable source, what kind of plants would be around that area? And also where would one be able to get a nice piece of bogwood?
I recommend buying proper aquarium wood from a fish store. Collecting wood from nature carries risks unless you know exactly what it is. I use Malaysian Driftwood (sometimes called ironwood, jetti wood) in my tanks, you can see it in the photos [click "Aquariums" below my name on the left]. It is very dark brown, near black; heavy (sinks immediately); minimal tannins initially; and lasts a long time (some wood will soften and begin to rot fairly quickly). You can also buy it online, though you may not see exactly the piece you are getting since they sometimes sell a "medium" or "large" piece and being natural wood each piece will be different.
Plants native to Amazonia: Echinodorus species, several stem plants, some floating plants. If the light is to be dim for the knifefish, lower plants (in the substrate) will be difficult. Providing sufficient light for them along with floating plants will still be too bright for knifefish. Providing plenty of dark shelter with bogwood can solve this problem for the fish, but it will be out less as it is basically a nocturnal fish that avoids bright daylight.
Many rivers and streams in Amazonia are without aquatic plants, because they flow through dimly-lit forest and aquatic plants cannot survive without some sunlight. There are exceptions, such as the Rio Guapore and Rio Negro; but most others have sunken logs, branches, overhanging forest canopy, vines and terrestrial marginal vegetation. However, when the forests flood as they do for half the year, the watercourses are then full with plants, and the fish live and spawn among all this vegetation.
Setting up an Amazonian tank can be done as an authentic biotope or as what I refer to as geographic aquascapes, where the fish and plants all occur in the Amazon basin but not together in the same watercourse.