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Fish breed sturgeon – sterlet, where he lives and what feeds on

There are breeds of fish that are considered especially valuable and noble. Since ancient times, representatives of the sturgeon family, with their presence on the table, have reported about the prosperity and prosperity of the host.

The sterlet fish was called “royal”, was a frequent guest on the table of Ivan the Terrible and Peter the Great.

Since ancient times, representatives of the sturgeon family with their presence on the table have reported on the abundance.

Sterlet is listed in the Red Book, so catching it is prohibited. But because of the high taste qualities, this fish is bred in artificial reservoirs, moreover, they are trying to raise the population in historical natural habitats.

This representative of the sturgeon family is inferior in size to her other brothers. The average specimen weighs usually no more than two kilograms with a length of 50 cm.

Of course, there can be giants up to 8 kg, but very rarely. There is evidence that a sterlet of fantastic size was caught in Siberia: 20 kg and a half meters in length.

The modest size of the sterlet in the sturgeon family is due to its early development and shorter life span – an average of 30 years versus 70 years of large sturgeon. In this case, the first is ready for breeding at 3−8 years of life, and sturgeon – only when reaching 8−20 years.

Externally, the fish looks very interesting. An elongated spout, jagged ridge and long mustache in combination with a graceful carcass have erected it to the rank of dishes that adorn the table with their appearance.

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Description of fish:

  • a small head in the form of a cone with a thin elongated nose and small convex eyes;
  • split lower lip, hanging antennae;
  • there are no scales on the body, but there are several rows of bone guards called bugs;
  • dorsal fin located far from head, closer to tail;
  • light yellowish color of the abdomen and brownish-gray color of the ridge.

The main difference of the sterlet from its other relatives is in the special arrangement of the shields on the body and their number. There are no gaps in the ridge of the fish, they close tightly.

Their number is from 15 to 17. On the belly, the plates, on the contrary, have gaps.

On the sides, the number of scutes can reach up to 70 pieces. The stereotype that the difference between fish in an elongated spout works only for individuals living in the natural environment.

Artificially grown individuals lose this “zest”.

The main difference of the sterlet from its other relatives is in the special arrangement of the shields on the body and their number.

This living creature does not tolerate solitude, lives in flocks and groups. The river fish, in the winter, having found deep pits, winters with its family, the number of which can reach several hundred. With the onset of heat becomes active and swims to spawn up the river against the current.

This is used by poachers and networked, which reduces its number. A lot of illegally caught fish appears in the markets.

Also, the cause of livestock reduction is water pollution. Sterlet – river fish, preferring clean, cool, oxygenated water.

She is very sensitive to the presence of impurities and chemicals in her “home”.

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As a rule, the fish is sedentary and rarely leaves its native places, but it happens that young sterlets overcome great distances in search of better food.

In light time, the sterlet lives deeply at the bottom, with the onset of night it goes to feed in shallow water. In the cold season it lies on the bottom and falls into anabiosis, where it spends time without food, slightly losing mass, before the onset of heat.

Sterlet lays caviar, and at first the embryos draw food resources from their yolk sac. Fry and small individuals eat plankton, midges, small crustaceans.

Also used in food is caviar of other fish, insect larvae, worms. Larger specimens can eat small fish, mollusks, leeches.

Sterlet in food is picky and during feeding even rises to the surface, turns the belly upwards and greedily catches midges, butterflies and other insects that are actively circling above the water.

Where the sterlet dwells, the water should be cool and fresh, and the bottom is sandy or fine rock. She loves large rivers and lakes with great depth.

In small and stagnant places will not live. Favorite places in water bodies are practically at the bottom of water channels.

The fish rises to the surface only at night and can even jump out of the water for flying prey.

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Historical places where the sterlet is found:

  • Ob.
  • Yenisei.
  • Lena.
  • Volga.
  • Lake Ladoga and Onega.
  • Irtysh, etc.

Humanity, as if feeling its guilt for endangered species on Earth, is trying to preserve and replenish animal populations. In addition, sterlet is a valuable commercial fish with excellent gastronomic properties.

But the business of breeding sterlet – difficult and time consuming. It is necessary to strictly maintain the temperature of the reservoir, food should be concentrated on the walls and the bottom, in the water column the fish do not perceive it.

Just a fish, like any living creature, can be susceptible to diseases, although it has a fairly stable immunity.

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Soviet scientists decided to create a hybrid of sterlet, they wanted to get a specimen, which is also developing rapidly, but has larger sizes. The largest representative of the family – the beluga was crossed with the smallest one – the sterlet. From the first letters of the parents and got the name hybrid – bester.

This fish calmly refers to the presence of salt in the water. It ripens quickly and gains weight.

Despite the breeding of sterlet by humans, this fish remains an expensive product. Its meat is very tasty, boneless, tender, with a slightly sweetish taste and very healthy. It has a low glycemic index, which allows it to be attributed to dietary products.

Amenable to any heat treatment, salting, smoking, which does not go to the detriment of taste. The dark gray caviar of sterlet is also extremely tasty, and it can also be black.

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