do a google search for "Fish Farm" + your zip code, or "pond stocking".. you should be able to find what you want if you keep looking (i still don't have my perch yet, but hopefully soon!).

ohio state has done some pretty intensive studies of yp..

a short study on fry production;
http://www.ag.ohio-state.edu/~prec/aqua/fact/perch1.htm

commercial production;
http://aquaculturetanks.net/yellow-perch/

all kinds of perch info out there