Planted Tank Guru
Join Date: Dec 2017
Location: Elk Grove, California
I would up your school of corydoras for sure, you could easily go 4 more of each- a dozen total if nyou have no other bottom-dwellers.
If your interested in a fish that will swim in the upper level of the tank ( but, must have cover or will jump!) you could try either the Marble or Silver Hatchetfish.
Or, you could get another mid-schooler, but one that is larger than your neons like: the Bleeding -heart tetra, Diamond tetra, or Rosy tetra. All three are not nippy and good community fish.
180 g. low tech w/ wild South American cichlids, corydoras eques, and African Congo riverine tetras.
60 g. low tech w/ F1 Alenquer pair /Stendker "Tefe" discus and wild Altum Angels
30 g. low tech w/ Wild Tucano tetras
30 g. low-tech African Biotope