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) survivor from a Japanese convoy destroyed by American aircraft carrier planes three weeks earlier. The submarine remained at Midway for just over three weeks; then headed for its patrol area in the Nansei Shoto on 18 September. After sinking a small Japanese fishing boat on 9 October, "Sterlet" rescued six downed airmen off Okinawa. On 18 October, she made an unsuccessful attempt to close and attack one of six destroyers escorting three cruisers. Two days later, she fired a spread of three torpedoes at a Japanese cargo ship, but all three missed. She made a third fruitless approach on 25