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) back to the western Pacific and after briefly stopping at Pearl Harbor, Guam, and Subic Bay, arrived in Tsingtao, China, on 20 April. She operated out of Tsingtao until the end of May, participating in the Navy's show of force along the northern China coast. She spent the first ten days of June in Shanghai and then got underway for Pearl. "Sterlet" reached Oahu on 22 June and conducted operations in the Hawaiian Islands for the next 16 months. She headed west again on 15 November 1947 and reached Brisbane, Australia, on 1 December. Five days later, the submarine shaped