i have 3 tanks, 1 with royal blues, 1 with red shoulder and 1 with fish from both species that have been mixed up
i bred them all but when they were growing on and we needed to thin numbers i had someone (who was supposed to know their fish) else move some to a new tank for me
they took some fish from each tank of purebred fish and mixed them up in the 1 tank
can't guarantee the females for species in that tank now :evil: