I posted a thread a couple days ago about the alleged "rat hopper" that I purchased at a pet store, because I'm moving my little guy up on the prey sizes (I had a huge surplus of mouse hoppers and he was eating like 3 a week so I could get rid of them).

I didn't know that rat hoppers existed, because rats don't tend to hop like mice do. Anyways, did some research and realized that all the places in my area call them rat hoppers, but on one pet store's site they also referred to them as 21 days old, so that's what I'm assuming a "rat hopper" is.

My question is would it be acceptable to just offer him the rat right away or should I do something like bring his prey size up gradually?