so can anyone say exactly, out of the rivers in the pic above, that for sure discus live in such and such river.
I am wondering about the bottom feeders in the area.
right now iam using planetcatfish for the names of rivers certain plecos come from and if those rivers for sure are ome to discus from you guys and this thread has been quite successful.
Discus and Angels in my belief are from the Amazon river and its main tributaries. Now as for bottom feeders, huge schools of corydoras inhabit the Amazon river.
Try mongabay.com. Its a really cool site that has a bunch of different biotopes. Take some of the names from the rivers on the map that TwoTankAmin posted and you can search those rivers. What will come up is a list of all known fish and plant species from that river. I can't remember for sure, but you may be able to look up the fish itself and find out what rivers it is from.