Ossetra genitive case form "осетра" (osetra, 'of sturgeon') of the Russian word "осётр" (osyotr 'sturgeon') from the phrase "икра осетра" (ikra osetra, 'caviar of sturgeon'). At one time, the term "ossetra" simply referred to Russian sturgeon species harvested for this type of caviar. In Russian, there are different names for the species of sturgeon that live in various territories such as "Beluga" ("Huso huso"), Sevruga ("Acipenser stellatus") and Sterlet ("Acipenser ruthenus"). The name Ossetra corresponds to the species "Acipenser gueldenstaedtii", which is much smaller than Beluga sturgeon ("Huso huso"), and has a firmer texture. In the territory of the Russian Federation
USS Sterlet (SS-392) turned her radar back on. The screen was clear; she had escaped. The submarine had one more anxious moment during the patrol, when she encountered a Q-ship screened by a small escort. She launched six torpedoes at the "freighter," which disconcertingly turned and closed "Sterlet". She succeeded in evading that aquatic chameleon and returned to Midway on 10 June. "Sterlet"’s final war patrol commenced on 5 July when she departed Midway for the vicinity of Kii Suido and Bungo Suido. Except for one occasion when she shelled oil storage tanks and a power plant near Shingu on Honshū, this whole