Hi Mark well that is a good thing, the bigger they get the more eggs they will lay. So feed them well and try to give them different food so that they do not only eat one kind. I have a pair which keep breeding but so far have not raised a big brood. It is such learning curve, that you are always discovering new things, and with these fish i feel you move one step forward and maybe another two back. Just when you thing you have figured it out as regards the water, and so on one dies for no apparent reason.
So keep up the good work