Joseph, there are several fish farms in your area. Goldenstate Bait in Merced and Speed Tech in Snelling both of them have Sacramento Perch (which is probably where I'm going to get SacPer). Speed Tech also sells Sacramento Blackfish and Sacramento Suckers. I have no idea about selling small quantities but I'll bet that if you called them and would pick up the fish and overpay a little (make it worth their while) then they would part with a small number.
If you click on this link -->
California Registered Aquaculturists you will see a link to a pdf list of Aquaculturists (the first link on the page).
My Mom has a backyard koi pond. Her fish kept getting wiped out by herons. She installed one of those electric eye sprinkler things that spray when it senses motion. Worked great, no more herons. Occasionally she has to deal with a wet dog though.
