Elephant fish
• Elephant fish is the largest fish in Iranian inland waters, which is ranked first in terms of caviar quality, and samples of it have been caught with a weight of about 1400 kg and an age of more than 100 years. It spawns once every 2 or 3 years and matures between the ages of 14 and 17 and is ranked as the most expensive fish and caviar in the world due to its best caviar. It has a height of one and a half meters to more than four meters, its fishing record in Iran was 980 kg along with 120 kg of caviar.
The Iranianis now an independent species, but was previously considered a subspecies of Russian fish.
"Qarahbrun" in Turkish means "black nose", which is of second value. It is now superior to the Russian species in terms of artificial reproduction due to artificial reproduction. It is larger than the Russian species and has a higher sturgeon quality than it. They are somewhat similar in appearance, although a darker color with white pigments extending to the nose separates it from the Russian sturgeon. . It weighs 60 to 130 kg and is 1 m to more than 2 m long, reaching maturity between the ages of 12 and 14.
Russian sturgeon or chalbash
Russian sturgeon or chalbash is one of the species found in all parts of the Caspian Sea and caviar is also called golden, which is the third most valuable and reaches the age of spawning and maturation between 12 and 16 years of age. . It is 1 to 2 meters long and weighs 60 to 100 kilograms.
Sheep caviar
Sheep caviar is usually a migratory fish that comes to the shores of Iran by spawning and lays its eggs in the rivers of the Caspian Sea. It has a lifespan of 30 years, is light weight and has a small number. It ranks fourth in terms of value. With a length of more than 1 meter and light weight, it matures between the ages of ten and 14 and reaches the age of ovulation.
Ozone fish (Dracul)
Ozone fish (Dracul) is the smallest caviar fish in the Caspian Sea, which in Iran is mistakenly called all sturgeon. From a qualitative point of view, it is in the last rank because it uses finer and cheaper caviar. It is facing problems in terms of artificial reproduction and its number is decreasing under natural conditions. In translation, his name has a long nose. It matures between the ages of 8 and 12. It is 1 to 1.5 meters tall and weighs less than other fish of this family in the Caspian Sea. Caviar alone is the most aristocratic breakfast in the world. Many people eat it raw or with egg yolks or onion crumbs, and some eat it the size of a spoonful with fragrant vegetables or a small piece of bread and butter. Some caviar lovers like it cold with a small spoon without bread. Some people like the pungent smell of fish like it and the taste of riot, although the taste and smell of caviar may not be pleasant at all for many.