I keep all of my levis separated. I do it not just because it's what I've always read to do with levis, but also because it makes it easy for me to keep track of which animals have eaten and how much they've eaten and exactly when breeding occurs and how often, etc. That way, if a health issue occurs, I can know for sure the details for each animal.
Indeed an interesting discussion.
Elias, do have by any chance this paper about the levis or can tell me where it was published?
How long does your pair live together? Did you notice your male not to eat good ?
best
Sebastian