The fish mentioned are from Central America, not South America, and you would have to do potted plants or those types that have the rhizomes exposed like anubias. I doubt the tetras will touch the anubias. Be careful with Centrals because they can produce hybrid fish, and take over most of the tank in order to breed.I like the salvini suggestion, beautiful fish. thanks! Looks like the tetras eat plants. Im thinking with this new SA direction, that i'd add some live plants to the tank
Do any of the fish ive mentioned eat live plants? other than the tetras?