What is the size of the rat you are feeding your male?

As for your female pinkie rats and fuzzy mice are inappropriate when it comes to size, an hatchling out of the egg can take a hopper mouse or a rat crawler, so if you chose to feed mice I would suggest to feed a hopper and not a fuzzy.

Feeding as a lot to do with security and proper husbandry how big is the enclosure for you 81 grams female? What are your temps? How tight are your hides? etc