I have a 1/4acre bait pond that I stocked with them last fall. I bought maybe 300 off a seller and after shipment I would be surprised if 75-100 lived.
I saw no signs of life all winter long... extremely heavy freeze (For us in NC) with a couple weeks in single digits and I assumed all had died. I shocked the pond this fall just to see what was going on... and I was amazed that the water was literally "boiling" with shrimp. I have since several thousand to a 10 acre lake and will let you know the survival rate next spring in that body of water.
It would be hard to estimate but I'm guessing that 75-100 shrimp easily turned into 50,000 plus ?!? There was also almost no predation in that pond, except for a few errant BG.
Good Luck.
