
If you're sure you have a pair and the female is nice and plum-
a good way is to put them in a small tank with marbles on the bottom
they will swim back and forth and she will drop her eggs an he will fertilize them
when you see that she has slimmed down you'll know she has dropped her eggs
remove them and leave the tank as is
in a few days yo'll see the eggs in between the marbles
in a while (not sure how long)
you'll see the eggs darkening
and soon they';; start to hatch
Hope this helps :

:

Wilfie