So I used this video to help me get a better idea of the terms and what they refer to size wise.

https://youtu.be/UXF-GaoWot0

It helped me understand what I needed to get. I just got my BP a few weeks ago and the breeder said live hopper is what it has eaten yet petsmart didn't have "hoppers", they just had pinkies, fuzzies, small, medium and large mice so I went with the small mouse and my boy had no issue with it. Specially for his first time feeding for me and first time eating F/T. I weighed him last week after his first feed with me and he came in at 93g