I have a breeding pair of rotkeil severums, which bred constantly and one batch of fry was poor so I removed my male from the tank to give the female a rest for a few weeks. However she still spawned and some of the eggs hatched, I saved some fry because I wanted to know who the dad was. I have kept one, bit obvious from the markings who the dad was! I have since sold the convicts so it didnt happen again.