The 1st place was taken in South America category by Svetlana Kirillova from Russia. The aquarium was imitating fragment of backwater of a small forest tributary of Itenez River. In my opinion this layout looks too much like a planted aquascape than like a real biotope tank. There are many species of plants (listed below), and many species of fishes. In the wild such large amounts of species rarely occur in one small area (especially species of plants). There is also barely any plant debris on the bottom - whereas in a forest creek dead leaves and twigs would be probably dominant over living underwater plants.
Nevertheless, smiliar as the aquarium from the 2nd place - very nice tank! It's just not very biotope-like :)