Lake herring roe at the Dockside Fish Market in Grand Marais, Minn. Some workers at the market call it "Lake Superior Gold." Derek Montgomery for NPR hide caption

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Europe's Taste For Caviar Is Putting Pressure On A Great Lakes Fish

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Tucker Jones, a biologist with the Oregon Department of Fish and Wildlife, counts sturgeon in the Columbia River. He says only 1 percent of sturgeon survive the 15 to 25 years it takes for them to start reproducing. Courtesy Oregon Department of Fish and Wildlife hide caption

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This Vivace "no-kill" caviar was harvested from a Siberian sturgeon via a massage-based technique. The fish didn't die. But did the taste survive? Alastair Bland for NPR hide caption

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From An Israeli Kibbutz, A High-Priced Caviar Prized By Top Chefs

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