An Asian Biotope would be spectacular!
I would start with 3 Pearl Gouramis (1 male and 2 females), 20 Schooling fish (Harlequin Rasboras, Gold Ring Danios, Rasboras Agilis, Hengeli Rasbora, Cherry Barbs and a few more) and some Loaches (Dwarf Chain Loaches, Kuhli Loaches, Zebra Loaches and a bunch more. The numbers can be interchanged.
Most Cryptocorynes would be well suited for that tank, especially if you have a low light setup. There are probably a bunch of other plants that you can look up by region on : http://plantgeek.net/plantguide_cat.php?category=6
I would start with 3 Pearl Gouramis (1 male and 2 females), 20 Schooling fish (Harlequin Rasboras, Gold Ring Danios, Rasboras Agilis, Hengeli Rasbora, Cherry Barbs and a few more) and some Loaches (Dwarf Chain Loaches, Kuhli Loaches, Zebra Loaches and a bunch more. The numbers can be interchanged.
Most Cryptocorynes would be well suited for that tank, especially if you have a low light setup. There are probably a bunch of other plants that you can look up by region on : http://plantgeek.net/plantguide_cat.php?category=6