Ossetra dwells another type of sturgeon, Siberian sturgeon ("Acipenser Baerii"), which is farmed all over the world because it can adapt to a wider range of habitats. It begins to produce caviar faster than "Acipenser gueldenstaedtii". Throughout the entire history of black caviar consumption, reference to Ossetra was made only to the fish that was caught first in Imperial Russia, then the USSR, and now in the Russian Federation. Today, Caspian Ossetra is facing extinction in its native habitat. Farming sturgeon is the only way to continue the production of high-quality caviar. Continuous drastic declines in natural sturgeon populations over the
USS Sterlet (SS-392) to the western Pacific with the Seventh Fleet. On these cruises, usually of approximately six months duration, she participated in a host of exercises and war game problems and visited most major ports in the Far East, particularly those in Japan, Taiwan, China and in some of the Central Pacific islands. After her return from her final deployment in the summer of 1968, "Sterlet" was found to be unfit for further naval service. Accordingly, she was decommissioned on 30 September 1968, and her name was struck from the Naval Vessel Register on the following day. She rendered her last service