The 40 g has 19 Cardinal Tetras, a pair of honey sunset dwarf Gouramis, a few orange chela Hatchtetfish and 7 young Peacock Grudgeons.
I have a couple of smaller tanks with lots of micro rasboras, micro danios and sparkling gouramis.
I really like keeping very small fish in my aquariums. The honey gouramis are the largest fish I have right now.