My tank at the moment is 60litres it has 2 male angels (3inch), 3 plattys 1 male, 2 female (1 inch), a large female molly (3 1/2 inch) of which has about 25, female, juvinile offspring ranging from 2cm-2inch and finally a male and female brittlenose.
I know thats alot and but let me explain...