There are only BG, LMB (and some sunfish I believe) I would not know the difference between a hybrid BG and a regular BG to be very honest about it. I fished it almost every day last spring/summer/fall when we first acquired it, so I beleive I have a pretty good picture of the species that are in there. The average size of the LMB is about 1.5 -2.0 LB. Some bigger ones up to 3 Lb. but not common.
My goal is to have some diversity other than BG and LMB. I have never really "loved" LMB fishing. I do enjoy catching, and at times enjoying a BG, YP or WE fish fry.. I want my pond to be a little bit different than the same old LMB and BG pond. Still trying to get the hang of some of the fish species acronyms!! LOL