The only way I know to verify if the LMB is female or not is to insert a catheter into a gravid LMB and see what is inside. Other than that, I am just guessing and assuming.

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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).