Chinese people entered the industry in the 10th century and raised fish in the Yangtze River.
For the Russians, caviar was so valuable that the image of sturgeon was minted on copper coins.
According to the agreements, the Russians once occupied the southern shores of the Caspian Sea, and after that a treaty was formed for joint fishing in the Caspian Sea.
Until the Iranian fisheries industry became national in 1952.
During all these years, with overfishing and pollution of the sea and the smuggling of caviar, the generation of sturgeon species declined and endangered species were declared to be in need of human breeding and care.
The The main fishing place for caviar is the southern shores of the Caspian Sea (Iranian coast), some species of sturgeon can also be found in inland rivers.
One of the factors that sturgeon tend to be on the southern shores of the Caspian Sea is that the high cold and low depth of the lake in higher areas has prevented sturgeons to live there.
Undoubtedly, the first history of caviar is the first people that used caviar were the people of the Persian Empire that had considered it as a rich source of energy and they thought it has medicinal properties.
Consumption of this product has also been confirmed in Rome and by the Russians.