From my fishing in southern waters, if I lived where CNBG would survive, I wouldn't stock Northern BG in my pond. I'd go with a 80/20 mix CNBG/RES.

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).