RES spawn the same time as BG around here, so if you can find where they are spawning you can catch a bunch in a short amount of time. Males will be guarding the beds, females staging in deeper water (usually) out from the beds.

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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).