Starry sturgeon feeds on fish, worms, crustaceans and mollusks. It lies on the bottom during the day and feeds mostly at night. This fish is anadromous and moves upriver into shallow waters to spawn. The starry sturgeon is an important commercial species of fish. It is one of the three most important species for caviar, see "Sevruga caviar", along with the Beluga sturgeon and the Ossetra sturgeon. Its flesh is considered an expensive delicacy in the Caspian region. It is used to make kabaabs, or is consumed pan fried, broiled, or smoked. There have been several attempts in Russia, Iran, Italy, and
USS Sterlet (SS-392) October and unleashed four torpedoes on small convoy. Results: four misses. Not to be denied, "Sterlet" made another approach on the convoy. This time, four of the six fish she launched scored. Three hit a large gasoline tanker, and the fourth plowed into a freighter. The tanker, "Jinei Maru", is known definitely to have gone down. "Sterlet" spent the remainder of the day evading the attacks of the escorts. That night, she allowed a hospital ship to pass unmolested. She attacked a small freighter with four torpedoes on 29 October, but had to surface and sink it with her deck