Agree with Quint... "wild type" Neos.
Amanos can, and do, breed perfectly fine in freshwater! As you yourself have witnessed... you have berried females. The problem is, is that offspring of amanos typically die within 7 days of hatching if not transferred over to saltwater... or brackish... and even then, it's not easy to raise them.
"Wild type" Neos are typically produced by mixing 'incompatible' colors.