This company raises white sturgeon, one of two native species to California (the other is green sturgeon). They originally obtained their stock from the Sacramento River. Once they were able to create their own brood stock for the next generation, they no longer needed to harvest fish from the river.
Learn more about sustainable caviar production in the video, "Green Eggs By The Gram: Sustainable Caviar."
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Science on the SPOT: Green Eggs By The Gram – Sustainable Caviar