wonder if there is anything similar one could stock here in the midwest similar to those Prawns?
Large species of CRAYFISH. Keep in mind that prawns won't spawn in freshwater ponds thus you are buying & stocking prawns each year in the forage pond. Crayfish will readily reproduce and grow in ponds. Don't overlook he is also stocking trout each year as forage.
I think in nutritional studies they measure by body weight.
