Bobby:

To achieve your goal, I would stock LMB at the rate of 100 per surface acre and remove any LMB that are over 15" long, including that 5# one. The smaller LMB will eat the small CNBG & small GSF and what specimens survive will have enough food in the pond to grow large.

Do you have a feeding program in place on the pond?

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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).