The Russian Sturgeon may live to 48 years weighing around 100 kg. The species matures sexually between 8-16 years and most female spawners in the wild are aged 13-23 years. Spawning occurs every 2-3 years. The Russian Sturgeon has a wide distribution, occurring in the Caspian Sea, Black Sea and the Sea of Azov, and originally in many of the tributaries of these seas.
Caviar from the Russian Sturgeon is commercially known as “Ossetra,”, and is the second most highly sought-after caviar, after that from Beluga (Huso huso).
Maretarium´s Russian sturgeon is the biggest one ever seen in Finland. When it was caught by local fisherman on the 3rd of July 2008 it was 92,5 cm long and 3,88 kg.