Sterlet Sterlet The sterlet ("Acipenser ruthenus") is a relatively small species of sturgeon from Eurasia native to large rivers that flow into the Black Sea, Azov Sea, and Caspian Sea, as well as rivers in Siberia as far east as Yenisei. Populations migrating between fresh and salt water (anadromous) have been extirpated. Due to overfishing (for its flesh, caviar, and isinglass), pollution, and dams, the sterlet has declined throughout its native range and is considered vulnerable by the IUCN. Restocking projects are ongoing, and it has been introduced to some regions outside its native range, but the latter have generally not
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