In the Arizona desert, a Tucson-linked fish farm tests the limits of sustainable seafood - AZ Luminaria

In the Arizona desert, a Tucson-linked fish farm tests the limits of sustainable seafood - AZ Luminaria

By Melina Walling, Annika Hammerschlag and Joshua A. Bickel, Associated Press DATELAND (AP) — Storks scatter, white against blue water, as Dan Mohring’s pickup truck rumbles down the dirt road. He’s towing a trailer full of ground-up beef, chicken, fish and nutrient bits behind him, ready to be shot out of a cannon into the ponds below. It’s time to feed the fish. Mohring fires up the machine and the food flies out in a rainbow arc. Then the wat…