natural habitat

so i want to buy more driftwood specifically somewhere that sells it buy the pound or on ebay buying single larger pieces... but my main question is what do you guys prefer to use in predominantly new world cichlid tanks i want some long branching pieces like Manzanita that i can then lean in...

I tried google search...but did not get satisfactory results... Species I'm interested are Penguin Tetra , Diamond Tetra , Cardinal Tetra and Rummy Nose Tetra...what species of fish (not only other Tetra species) live together in the wild with these 4 species of tetras (Fish that are available...