Sevruga caviar as saltier, but it can vary depending on the origin of the fish. The caviar is packaged and sold in red tins. A rare type of caviar known as Imperial Caviar, from the Sterlet sturgeon (Acipenser ruthenus), a now nearly extinct species of sturgeon from the Caspian Sea, is sometimes incorrectly labeled as Sevruga, as well as the even rarer Golden Caviar from the albino Sterlet, the caviar being yellow in color. “Pressed sevruga caviar” can also be found, made of a blend of Osetra and Sevruga caviar that has been heated in a saline solution. Sevruga caviar Sevruga caviar
USS Sterlet (SS-392) and rapidly closed on "Sterlet". This pursuit forced "Sterlet" to retire; and, after more than an hour of running from the frigate and undergoing his bombardment, she managed to open range by firing four torpedoes "down the throat" at him. This tactic did not allow her to escape, and the chase continued until the frigate turned broadside to fire both his forward and after guns in salvo. That curious maneuver allowed "Sterlet" to open range to at which point, the enemy's radar wavered. "Sterlet" shut her radar down, came hard to starboard and opened out. A minute before midnight, "Sterlet"