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The whitefish—the king of Siberia and its last refuge. The whitefish (Stenodus leucichthys) is one of the most beautiful, delicious, and, unfortunately, rarest fishes in Siberia. It is sometimes called the "king of fish" or "Siberian salmon." This large freshwater predator of the whitefish family was once widespread in the basins of the Ob, Yenisei, and Lena rivers and their major tributaries.
Today, the whitefish is in a very difficult situation. It has practically disappeared from many rivers, and in its remaining habitats, its population is critically low. The Red Data Book of the Russian Federation lists the whitefish as an "endangered species."
Appearance and features
The whitefish is a large, beautiful, and powerful fish. Adults typically reach a length of 80–110 cm and a weight of 8–20 kg. Record-breaking specimens can weigh over 30 kg.
Distinguishing features:
- The body is elongated, torpedo-shaped, covered with small silvery scales.
- The back is dark grey or greenish-blue, the sides and belly are bright silver.
- The head is relatively small, the mouth is large, the lower jaw protrudes slightly forward.
- The adipose fin is well developed, a characteristic of all whitefish.
- The meat is white, very tender and fatty, with a characteristic “salmon” taste and aroma.
In terms of taste, whitefish is considered one of the best freshwater fish in Russia. Its lightly salted or smoked meat is a true delicacy.
Lifestyle and habitat
The whitefish is a semi-anadromous fish. It spends most of its life in large lakes and desalinated sea areas (the Caspian Sea and Lake Baikal in the past), and enters large Siberian rivers to spawn.
It used to migrate very high up the Ob, Yenisei, Lena, and their tributaries. Today, its spawning migrations have been greatly curtailed due to hydroelectric construction and pollution.
The whitefish is an active predator. Its diet consists primarily of small fish (vendace, smelt, juvenile whitefish, and roach), crustaceans, and large zooplankton. It hunts both in the water column and near the bottom.
Whitefish spawning
Spawning occurs in the fall, usually in September–October, at water temperatures of 4–8°C. The fish enter rivers and sometimes migrate upstream for hundreds of kilometers. They lay their eggs on pebble or rocky ground in areas with strong currents.
The eggs are large (3–4 mm) and light yellow. A single female can lay up to 100,000–300,000 eggs. After spawning, most of the spawners die, although some survive and may spawn again.
The young fish remain in the river for 1–2 years and then migrate to lakes or freshened sea bays.
Why has whitefish become rare?
The main reasons for the sharp decline in numbers:
- Hydroelectric construction– hydroelectric dams have blocked migration routes to spawning grounds.
- Poaching—especially during the spawning run—was a common occurrence. Whitefish was highly prized for its excellent taste.
- River pollution– industrial and agricultural runoff.
- Overfishing - in Soviet times there was industrial fishing of whitefish.
- Deterioration of feeding conditions - reduction of food supply ( vendace, smelt ).
Today, natural reproduction of whitefish is preserved only in certain rivers of the Ob and Yenisei basins, as well as in some tributaries of the Lena.
Up-to-date status and security
The whitefish is listed in the Red Data Book of the Russian Federation and many regions. Commercial and recreational fishing is prohibited almost everywhere. In some regions, only sport fishing is permitted, using the "catch and release" principle, with mandatory registration.
Artificial reproduction is carried out at fish hatcheries, but the results are still modest. Juvenile whitefish are very demanding regarding water quality and food.
The whitefish does not naturally inhabit the Putorana Plateau—it is too cold for it and there are few suitable spawning grounds. Other whitefish ( broad whitefish, peled, and cisco ) and salmonids ( taimen, lenok, and char ) predominate here, as they are better adapted to the harsh mountain conditions.
Conclusion
The whitefish is a true gem of the Siberian ichthyofauna. Its tender, fatty, and delicious meat was once considered a royal treat. Today, this fish has become a rarity, and its conservation depends primarily on us—fishermen, scientists, and government officials.
The "catch and release" principle should be mandatory for any accidental capture of whitefish. Every released spawner represents a chance for the species to survive.
Conserving the whitefish isn't just an environmental issue. It's a matter of preserving Siberia's cultural and natural heritage. As long as there are still places in our rivers where this magnificent fish can live, we still have hope of restoring at least some of its former glory.
Protect Siberian rivers. Protect whitefish.
