Just let the parents do their job. Do you have any tankmates with the jags??? If so you may want to remove them to another tank or add a divider to limit casualties, lol. Anyways, what exactly is your question? If your jags are solo then leave them be for a while, the parents will take good care of their fry. As the fry become free swimming you could siphon them out into a seperate tank if you like, although i did not and it was just fine.