Swiss fish farm uses warm Alpine water to produce caviar

Swiss fish farm uses warm Alpine water to produce caviar

Photo taken on Aug. 18, 2015, shows greenhouses and sturgeon-breeding facilities at Tropenhaus Frutigen, a unique fish farm producing caviar and tropical fruit in the Swiss Alps in Frutigen, southeast of Bern. Warm runoff mountain water from a railway tunnel nearby is used to heat the greenhouses. (Kyodo) ==Kyodo

Swiss fish farm uses warm Alpine water to produce caviar

Swiss fish farm uses warm Alpine water to produce caviar

Caviar from Siberian sturgeon raised at Tropenhaus Frutigen, a greenhouse fish farm in the Swiss Alps in Frutigen, southeast of Bern, is served at the farm's restaurant on Aug. 18, 2015. Warm runoff mountain water from a railway tunnel nearby is used to heat the greenhouses. (Kyodo) ==Kyodo

Swiss fish farm uses warm Alpine water to produce caviar

Swiss fish farm uses warm Alpine water to produce caviar

Marcel Baillods, chief executive officer of Tropenhaus Frutigen, demonstrates how to conduct a tasting of caviar -- by placing a small amount on the back of one's hand between the thumb and index finger -- on Aug. 18, 2015, at the company's unique greenhouse sturgeon meat and caviar farm in the Swiss Alps in Frutigen, southeast of Bern. Warm runoff mountain water from a railway tunnel nearby is used to heat the greenhouses. (Kyodo) ==Kyodo

Swiss fish farm uses warm Alpine water to produce caviar

Swiss fish farm uses warm Alpine water to produce caviar

A pair of Siberian sturgeon are bred for meat and caviar at Tropenhaus Frutigen, a greenhouse fish farm in the Swiss Alps in Frutigen, southeast of Bern, as seen on Aug. 18, 2015. Warm runoff water from a railway tunnel nearby is used to heat the greenhouses. (Kyodo) ==Kyodo