so a buddy has a vieja pair that breeds now and then and he has a hard time getting rid of the fry as not many people in the area know about them and not many have the correct setup.is it okay to leave in the fry with the parents and let them do their thing ? and maybe use the ones that survive as feeders for aros and bichirs? he wants to keep the bair together but dosent want fry .. is there a way to achieve this? maybe colder temps??