In the wild, Sevruga sturgeon starts producing eggs in its eighth year, is dark grey in colour, fine grained and carries a distinctive flavour.
Most caviar dealers worldwide prefer the taste of Sevruga Acipenser Stellatus. In Russia, nets are laid at the mouth of the deltas of the Ural and Volga rivers as the fish are ready to spawn. In Iran, caviar is caught by small fishing boats laying the nets two miles from the shore.
The sturgeon are caught before the fish would normally swim to the rivers to spawn. Although now farmed mostly in Bulgaria, even the farmed Sevruga caviar is quite difficult to obtain due to its ability to produce eggs under farmed conditions.