Just in case ML if out of pocket, I'll chime in on this one since we are on the same page about tilapia stocking.

We both obtained tilapia from the same supplier that recommends 20 lb/acre @$10.00 /lb.
ML recommended to me 5 lb/acre but since I have heavy FA, I stocked 10 lbs/acre.

George Glazener
N.E. Texas 2 acre and ¼ acre ponds