My adult male is a little older and is offered a small rat, fortnightly. He typically around 1500g but has been heavier before a eating dry spell, in the past.

He's approaching that time of year again where he's going to go off his food, so this year I'm going to offer a medium, two smalls and a medium again, fortnightly, until he goes off his food.

Last time was a 6 month spell where I stopped putting him with a female because I was concerned he was losing to much. I'm not pairing him this year so basically trying to stock up his fat reserves before the hunger strike begins.

But to echo what others are saying, 1 small rat every other week from the description you gave of your male.

My adults are offered bi-weekly, but will offer my breeding female weekly if looking keen.

Sub-adults, weekly.