I JUST now bought another 4 of the dwarf gouramis. Another two males and another two females.
I also bought two small blue spotted gouramis. I dont know how to tell male from female yet.
Though with the dwarf gouramis, I read that it is the dorsal that tells male from female. (im going to use DG for Dwarf gouramis)
The male DG has a longer pointed dorsal while the female has a shorter curved dorsal.