Once a dish of the tsars and a sign of rank and riches, sturgeon is a perfect dish to try in Russia. The Russian sturgeon (Acipenser gueldenstaedtii), also known as the diamond sturgeon or Danube sturgeon, is a species of fish in the family Acipenseridae. It is found in Azerbaijan, Bulgaria, Georgia, Iran, Kazakhstan, Romania, Russia, Turkey, Turkmenistan, and Ukraine. It is also found in the Caspian Sea. This fish can grow up to about 235 cm (93 in) and weigh 115 kg (254 lb). Russian sturgeon mature and reproduce slowly, making them highly vulnerable to fishing. Try baked sturgeon with vegetables, or spread some black caviar on dark bread or savory pancakes. Sturgeons are now raised on fish farms, as they are endangered in the wild.