Sevruga caviar as saltier, but it can vary depending on the origin of the fish. The caviar is packaged and sold in red tins. A rare type of caviar known as Imperial Caviar, from the Sterlet sturgeon (Acipenser ruthenus), a now nearly extinct species of sturgeon from the Caspian Sea, is sometimes incorrectly labeled as Sevruga, as well as the even rarer Golden Caviar from the albino Sterlet, the caviar being yellow in color. “Pressed sevruga caviar” can also be found, made of a blend of Osetra and Sevruga caviar that has been heated in a saline solution. Sevruga caviar Sevruga caviar
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