Amazon theme, occupants are:

7 Pterophyllum scalare "Peruvian Angelfish"

9 Hyphessobrycon serpae "Serpae Tetras"

11 Corydoras arcuatus "Arched Corys"

1 Corydoras aeneus var. "without gold stripes"

2 Panaque maccus "Clown Plecos"

6 Otocinclus vittatus "Striped Otocinclus"

6 Caridina japonica "Yamato Shrimp"

Syngonium podophyllum "Arrowhead Vine"

Echinodorus bleheri "Broad-leaved Sword"

Echinodorus parviflorus "Black Sword"

Echinodorus osiris "Red Sword"

Lilaeopsis brasiliensis "Micro Sword"