Towards the end of 1800 a shortage of the Caspian Sea and Black Sea resources forces to extend sturgeon fishing to many other areas in the world. Everywhere new industries quickly collapse from lack of stocks. 
During the Belle Époque, and especially after the October Revolution of 1917, much of the Russian aristocracy migrates to France bringing with them a caviar trend that will soon spread throughout Europe.
To support this growing consumption, sturgeons are caught and even decimated in France, Germany, USA, Canada and Asia, as well as in Italy. However, the species of the Caspian Sea and the Black Sea are the only ones still exploitable and assert themselves in international markets with their Russian names: beluga, oscietra and sevruga.