Actually it's how your convicts breed, Mike really can't say i'm wrong since my convicts aren't good parents and i'm having to remove my fry now. Your convicts might take care of them, it really depends. My convicts have spawned atleast 6 times for me since i've gotten them and the fry have never made it to free swimming stage because of the parents, so i'm starting to remove them. Others have luck with getting good convict parents that will take care of them for long periods of time.
We're both right. It's really up to the convicts. So you can't really say i'm wrong. If you want as many as you can to live like you said, I would remove them and not even risk letting your convicts eat some of them, but if you want to watch your convicts raise the babies like I wanted to, then just leave them in there but a lot are prob. going to die.