The overwhelming majority of the family reaches puberty after 3 years of life. Large individuals (cod, moth) begin to spawn when they reach 6–8 years of age. Spawning occurs in late winter or early spring. Codfish are very prolific. Large individuals can lay up to 9 million eggs. Navaga spits up to 90 thousand eggs, small representatives of the family. no more than 6 thousand. The eggs and larvae that appear are predominantly pelagic. The current from the spawning site carries them over considerable distances.
The fry spend the first year of life in shallow water near the coast. They often hide under the jellyfish bell. As they mature, juveniles move to depths and begin to make seasonal migrations.
Interesting fact! Only males are born from the eggs laid by the blue whiting. As they mature, some fry show signs of females. By the age of maturity, the ratio of males and females to blue whiting becomes equal. By the end of life (fish lives on average for 20 years), all individuals gradually turn into females.
Cod fish are a priority object of domestic and world fishing. They are prized for their tasty, low-calorie meat and low bone content. Affordable price plays an important role.
Codfish are a welcome trophy for sea fishing fans. Trolling, plumbing are the most popular methods. Representatives of the family are successfully caught from the shore using spinning or bottom gear. Either way, fishing for cod fish is a lot of fun.
Fish belonging to the cod order, with a few exceptions, are predators.
At a young age, they feed on benthic invertebrates: crustaceans, shrimps, worms. As you get older, your diet changes. Now it is based on small fish, including representatives of its own family. For example, cod actively feeds on young pollock. Blue whiting is often a prey for haddock.
Small representatives of the order (gadikul, Arctic cod) feed on plankton and bentonic crustaceans, but sometimes they diversify the menu with fry or caviar of fellows.
Cannibalism is very common among cod fish: their own juveniles often become their prey.
This member of the cod family is found in the waters of the Mediterranean and Atlantic, as well as off the coast of Europe. This fish can be found in the Black Sea, off the coast of Crimea, where it is brought by the current after intense storms. It can grow up to 50 centimeters in length. The diet of whiting is made up of small crustaceans and small fish. Whiting itself supplements the diet of larger predators such as dolphins or katrans. Commercial catch of this fish is carried out exclusively in northern waters.
Merlang doesn’t like great depths. After two years of life, the whiting can already lay eggs. At the same time, eggs are deposited at depths of no more than 1 meter, with a water temperature of at least 5 degrees.
Useful properties of cod
Meat of these types is considered dietary, since the fat in it reaches only 4 percent. In this regard, cod dishes have an excellent taste and are quite healthy for humans.
This type of fish is already listed in the international Red Book and the Red Book of Russia. Atlantic cod grows up to 1.8 meters in length, although the average size is between 40-70 centimeters. Atlantic cod feeds on various crustaceans, molluscs, including fish.
Cod females begin to lay eggs at the age of 8-10 years, with a weight of 3-4 kilograms. She lives in the Atlantic Ocean. It is highly prized for nutritious and healthy meats, including the liver, which is rich in healthy fats. Delicious canned food is obtained from cod. Many are familiar with such a delicacy as cod liver, which is used to make delicious sandwiches and other cold snacks.
In 1992, the government of Canada imposed a ban on the catch of Atlantic cod, as its population has declined sharply, which threatens the complete disappearance of this type of fish.
Representatives of this family are found in almost all waters of the northern hemisphere of the earth, and only 5 species inhabit the seas of the southern hemisphere. All of them should be attributed to marine life living in salt water and, only burbot prefers fresh waters of the north of Europe, Asia and America.
The highest numbers of cod are found in the eastern parts of the Atlantic, including the Norwegian and Barents Seas. Only cod is found in the Baltic Sea. Representatives of cod can also be found in the Black and Mediterranean Seas.
It is unlikely that representatives of this family will be found in the equatorial zone, but as many as three species of this family live off the coast of South America, South Africa and New Zealand.
Types of cod with photos and descriptions
As mentioned above, cod species number up to hundreds of different species of fish. Among them are the most famous and most valuable, which will be described below.
Spawning and fishing
The species reproduces, as a rule, in salt water. Some representatives prefer more desalinated water for this action. And only a small number of species use the river area for spawning.
Spawning takes quite a long time, which takes several years. Due to their fertility, cod fish are capable of laying about a million eggs. But not all representatives of this family are capable of producing so many “small fish”. For example, navaga lays no more than two thousand eggs at a time.
The breeding season is during the cold season. Either in winter or early spring. The water temperature should not exceed 0 degrees.
Immediately from the first days of their existence, most fry are carried away by the current, which allows them to spread everywhere.
This family of fish is considered very popular and widespread due to the many beneficial minerals in its meat. Up to 10 million cod fish are caught every year.
The most common fish for catching are:
- Atlantic cod.
Fillets of this family are especially popular, as well as the liver, saturated with a huge amount of useful vitamins.
The main habitats of this fish are:
- White Sea.
- Pechora sea.
- Kara Sea.
It also prefers to be in the coastal zone, and for the spawning period it can go to the rivers. Despite this, the very process of throwing eggs is carried out only in salt water, in winter, at depths of about 10 meters. The female sweeps eggs, which adhere firmly to the base of the bottom, after which they develop here for 4 months.
Reaches a length of about 35 centimeters, although there are representatives up to 45 centimeters in length. The diet of northern navaga consists of fairly small crustaceans, worms and small fish.
It is caught on a commercial scale in the autumn-winter period, since its meat has an unsurpassed taste.
The fry that emerge from the eggs have a yolk bladder, this is due to the endogenous feeding period. The larvae can feed on their own only by the time the endogenous sac is completely absorbed. At this time, the exogenous feeding period begins. After this period, the larvae can linger in river water bodies, but most often they move to the sea.
The first food for sturgeon larvae is zooplankton, most often it is daphnia. Then the fry begin to feed on various crustaceans:
The only exceptions are predatory beluga fry, they do not have a yolk bladder and, even while in a fresh water body, begin to feed on their own. The subsequent development of sturgeons, up to sexually mature maturation, takes place in sea water bodies.
Anadromous sturgeon species are divided into winter and spring varieties. The latter, as a rule, enter freshwater rivers in spring. These sturgeons spawn almost immediately. Sturgeon winter crops enter the river in autumn, wait out the winter, and spawn in the spring.
List and photos of popular sturgeon fish
Sturgeons are the most popular in the fishing industry. To date, about 20 species of representatives of these fish are known. The most popular are such sturgeon.
Beluga is the most ancient species of freshwater sturgeon. The life cycle of this fish can reach up to 100 years. Beluga can grow up to 10 meters in length and weigh 3 tons. The beluga’s body resembles a torpedo in shape, and is covered in 5 rows with bone protective plates, white from below, and gray from above. At the bottom of the muzzle there is a sickle mouth and antennae, which provide the fish with a sense of smell. Females are larger than males. Beluga is a predatory fish that feeds, as a rule, on gobies, anchovies, anchovies, roach and herring. Females lay eggs in spring, every 3-5 years.
Kaluga. This is a freshwater fish of the beluga family. The size of a kaluga can reach up to 5.5 m, and its body weight up to one ton. The mouth is crescent and large. This fish is widespread in the Amur basin, it can also be found in Sungari, Shilka, Argun. They are distinguished by a fast-growing, estuary, checkpoint kaluga.
Russian sturgeon. It has a spindle-shaped body with a small blunt muzzle. The antennae are at the end of the mouth. Typically, the Russian sturgeon has a black-gray top, brown-gray sides, and a white belly. The fish reaches a maximum length of 3.5 m and can weigh up to 120 kg. The life cycle reaches 60 years. In their natural environment, sturgeon can create crossbreeds with beluga, sterlet, stellate sturgeon and thorn. This does not happen very often, however, these hybrids come across. Habitat: Black, Caspian and Azov seas.
Shovelnose. Freshwater fish weighing up to 4.5 kg and up to 140 cm in size. Differs in a flattened and rather long caudal stem with bony plates. The tail thread is small or completely absent, the eyes are small, the swim bladder is large. Habitat. tributaries of the Amu Darya.
Siberian sturgeon. The body of this species of sturgeon is covered with multiple bone plates and fulcras, the mouth is retractable, the teeth are missing. In front of the mouth there are 4 antennae. Places of residence: the pools of the Ob, Yenisei, Kolyma and Lena. The sturgeon reaches its maximum length up to 3.5 m, weighs up to 150 kg, and has a life cycle of up to 50 years. Spawning usually occurs in July. The fish are nourished by organisms that live at the bottom of the reservoir: amphipods, mollusks, chironomid larvae and polychaete worms.
Spike. Has a general appearance for sturgeon. Of 5 rows of bone spines, the dorsal spine has 12-16 spines, the ventral spines 11-18, and the lateral 51-71. On the first branchial arch 22-41 branchial stamens. Place of residence pools of the Aral, Caspian, Azov and Black seas.
Stellate sturgeon. Lives in the Caspian, Black and Azov Seas. This type of sturgeon can be spring and winter. The elongated body shape of this fish is characterized by the presence of a poorly developed lower lip, a convex forehead, a long nose, and smooth and narrow antennae. Above and from the side, the sturgeon body is densely covered with bony scutes. The sides and back are blue-black and the belly is white. Sevruga can be up to 6 m long and weigh up to 60 kg.
Sterlet. The smallest fish among the sturgeon family, the sterlet can grow up to 1.20 m in length and weigh up to 20 kg. The fish has long antennae reaching the mouth, a narrow elongated nose, a divided lower lip in two, and adjoining scutes on the sides. In addition to the usual plates on the body for sturgeons, the sterlet has closely adjoining scutes on its back. Depending on the place of residence, the sterlet can have a different color, but usually its back is gray-brown, and the belly is yellow-white. All fins are gray. In this case, the sterlet can be sharp-nosed and blunt-nosed. Fish live only in the north of Siberia.
As a rule, all varieties of sturgeon, while spawning, move into shallow waters into fresh water bodies. The sturgeon population is quite fertile, so large and adult sturgeons can produce up to 1 million eggs. Most often, spawning takes place in the spring. It should be noted that some sturgeons, in addition to spawning, move into freshwater rivers for wintering. In most cases, sturgeons live at the bottom of water bodies, feed on worms, small fish, insects and molluscs.
Sturgeon fish species: description and photo
Sturgeon fish species live mainly in salty sea water, and go to fresh water for spawning. Representatives of the sterlet family have the smallest sizes, their size on average varies from 35 to 100 cm, and their weight is from 0.5 to 5 kg. The largest representative of sturgeon is the beluga, it can reach a mass of 3 tons and be up to 10 m long. Today, sturgeon fishing is the largest fishery. Besides meat, sturgeon is also valuable for caviar.
Structure and characteristics
The sturgeon family, this is one of the largest fish species in the water, the sturgeon has an elongated body covered with 5 rows of bone spines: two on the belly, two on the sides and one on the back, between which there are bone plates.
Sturgeon is a fish with a cone-shaped and oblong snout resembling a shovel. At the bottom of the head are fleshy mouth lips, next to which are four antennae. The jaw has a toothless retractable shape.
The pectoral radial fin has a large thickening in the form of a “thorn”, while the dorsal fin is slightly extended backward. The swimbladder is located at the bottom of the spine, connecting to the esophagus. The bone skeleton has a cartilaginous and invertebrate structure in the form of a notochord. The membranes of the four gills are attached to the pharynx and connect at the throat; there are also two accessory gills.
Not all female sturgeons spawn annually. Only sterlet can breed every year. Sturgeons lay eggs in spring-summer in fresh water bodies with a large current. Caviar has a sticky shell, so it can stick well to pebbles or flagstones.
Initially, 2 types of the sturgeon family were classified:
In general, all species numbered about 20 species of fish that lived only in temperate regions: America, Europe and Asia. But over time, the population of many sturgeons became extinct.
The sturgeon group, the list of which includes about 20 species, is usually represented by long-livers. The period of readiness of sturgeons for spawning begins in different ways and depends on the type and place of residence of the fish. Sexual maturation, like the growth of sturgeon fish, is rather slow. Some sturgeon can only breed at the age of 15.
- In females, maturation occurs in 10-20 years;
- In males after 7-15 years.
As for weight, it can be noted that sturgeons are the fastest growing inhabitants of rivers. Sturgeons reach puberty most quickly on the Don and Dnieper, much longer than sturgeons living in the Volga.
Sturgeon fish on sale can be seen both live and frozen, smoked and chilled. Sturgeons are used to make balyk and various canned food.
The sale of salted sturgeon species is prohibited. This is due to the likelihood of the presence of a painful anaerobic in meat. botulinus, which causes severe poisoning.
Once upon a time, only that which was sturgeon was referred to as a red fish. These are such species as beluga, sterlet, stellate sturgeon and sturgeon. However, these species were not appreciated at all for the pinkish tint of meat, but for their excellent taste and nutritional properties. Now this generalized name has also been assigned to salmon fish. Thus, salmon, pink salmon and chum salmon are also called red.
There is a specific culinary and trade classification for this fish. The first group includes sturgeon, the place of residence, which is the Caspian and Black Seas. These are such species as beluga, sterlet and thorn, sturgeon and stellate sturgeon. The second group is salmon, such as salmon and trout, pink and chum salmon, and the last. white salmon species (white fish and coho salmon, nelma and taimen).
The value of red fish is explained by the large m in meat of vitamins of groups A, B, E, PP and D, zinc, phosphorus and calcium, fluorine and iodine. But the most important for the human body is the fatty polyunsaturated acid Omega 3. This acid is needed for normal brain function, maintaining immunity and improving memory. Scientists have proven that those people who constantly include red fish in their menu do not experience depression, and also reduce the risk of hypertension and oncology by 3 times.
The habitats are common with such a representative of the sturgeon family as the thorn. At the same time, distinguish between spring and winter stellate sturgeon. The characteristic features of the body structure are: a poorly developed lower jaw, a convex forehead, a long nose, a smooth and thin mustache. Almost the entire body is covered with protective bone plates. The belly of the stellate sturgeon is white, and the sides and back are blue-black. Can grow up to 6 meters in length and weigh about 60 kg.
Sturgeon fish species
Sturgeon species of fish are distinguished by the fact that they live in salt, sea water, and go to spawn in rivers with fresh water or in other bodies of water. At the same time, it should be noted that sturgeons have representatives of small sizes, from 30 to 100 cm long and weighing from half a kilogram to 5 kg, as well as representatives growing up to 10 meters in length, with a weight of about 3 tons. The catch of sturgeon species of fish in our time is a serious fishery, reaching large volumes. Because of this, the population of these fish species is constantly decreasing, and some of the species are prohibited from fishing at all. Sturgeon are prized for their delicious and valuable meat and caviar.
Almost all sturgeon species, before the spawning process, move to small depths of freshwater reservoirs. Sturgeon are quite fertile, as adults are able to lay up to 1 million eggs. Mostly spawning occurs in spring. Some sturgeon species not only spawn in fresh waters, but quite often wait out the winter in them. Sturgeons prefer a benthic lifestyle, feeding on worms, small fish, insects, and molluscs.
It belongs to the freshwater fish of the beluga genus and can grow up to 5 and a half meters in length and gain weight up to 1 ton. Kaluga has a relatively large mouth. Distinguish between fast-growing Kaluga, estuary and checkpoint. To a greater extent, this fish is found in the basins of rivers such as the Amur, Sungari, Shilka and Argun.
Sturgeon fish species, or rather about 20 species, belong to long-livers, since they can live up to 100 years, although this applies to only one species. The life span of other species does not exceed 60 years. The period of sexual maturity in many species begins at different periods, depending on the conditions of existence and the availability of food resources. Some of the species begin to spawn at 15 years of age. Wherein:
- Females mature at the age of 10-12 years.
- Males ready for fertilization from 7 years of age.
Sturgeon is a species of fish that grows quickly and gains weight quickly. In the Don and Dnieper rivers, sturgeon ripen somewhat faster than the representatives living in the Volga. This is not surprising, since the climate on the Volga is somewhat colder.
This is the oldest representative of the sturgeon family, and also the largest. Beluga can live for about 100 years, while growing up to 10 meters in length and gaining weight of 3 tons. The beluga’s body looks like a torpedo and is protected by 5 rows of protective plates. It is white below, and gray above. The mouth is located at the bottom of the head and is sickle-shaped. There is also a mustache that helps the fish navigate in space and look for food. Females are large compared to males. Eggs are laid once every 2-3 years. It is a predatory fish whose diet consists of gobies, anchovies, roach, herring and other fish.
List of sturgeon fish species with photos and names
Sturgeons occupy a special niche in the fishery. Nowadays, it is worth paying attention to some representatives of this family, which are of commercial interest. The following types are considered the most popular and in demand.
Classification of sturgeon fish species
There are 2 types of the sturgeon family:
Previously, there were more than 20 species of fish that were found in the waters of America, Europe and Asia. Unfortunately, in our time, the sturgeon population has a slightly smaller number of species, no more than 20.
Sturgeon fry, when they are born, are in the yolk bladder, which they feed on in the first days, until this sac dissolves. After that, they begin to independently search for food. Sometimes they linger in places of birth, but mostly they slide into the sea. The diet of fry consists of zooplankton, after the end of a certain period, having matured a little, their diet consists of:
- Of the mysids.
- Of the chironomids.
- From Gammarid.
But, as for the beluga fry, they are born without a yolk bladder and immediately begin to look for food on their own. Sturgeons develop in salty, seawater almost up to sexually mature age. There are 2 types of sturgeon: winter and spring. The latter species enter rivers in spring, before spawning begins, and the first species enters rivers in autumn, winter in these reservoirs and lay eggs in spring.
Sturgeon fish. Sturgeon family. Sturgeon species
The family of sturgeon fish belongs to the few remains of the oldest forms, the flowering of which occurred at the time before the appearance of bony waterfowl.
One of the oldest signs of sturgeon is the preserved cartilaginous notochord, which serves as the basis for the axial skeleton. Even adult fish of this family lack vertebral bodies. The features of sturgeon are enclosed in the preserved cartilaginous basis of the internal skeleton and cranium.
Like sharks, this ancient family has a squid. It is a special opening leading from the branchial cavity to the upper edge of its cover. At the base of the fins of the abdominal part is the anus. The arterial cone is located in the heart muscle, and the spiral valve is located in the intestine.
Sturgeon fish still retained a special enamel-like substance called ganoin on their rhombic scales. This is a distinctive characteristic of sturgeon. That is why fish of this family are also called cartilaginous ganoids.
The habitat of freshwater and anadromous sturgeons is the Northern Hemisphere. They are distinguished from all other fish by the presence of bony plates pointed to the top. One row is located on the back, two are located on the sides and on the belly. The upper row runs from the occiput to the very base of the fin. The lateral ones run from the branchial opening to the tail. The ventral rows extend to the lower fins, starting from the shoulder girdle. Between large plates, smaller.
Sturgeon fish have a spindle-shaped elongated body. Their heads are covered with strong bone shields. Various types of sturgeon fish have a xiphoid, elongated or conically pointed snout. The mouth, located at the bottom of the head, is a transverse slit. It can be semicircular with fleshy lips, and retractable without teeth. In front of the mouth, forming a transverse row, there are four antennae.
Sturgeon breeds have a heterocercal (unequal) caudal fin. Their spine has a sharp bend at the end. It is he who is the basis of the tail fin, which is covered with rhombic scales.
There is a strong thickening on the pectoral fin. Its front ray is a thorn. The peculiarities of the dorsal fin of sturgeon are that it is far removed from the head.
The emergence of hybrids
Sometimes, in natural conditions, there is a crossing of various sturgeon species with each other. As a result, a variety of hybrid variants appear.
A huge number of individuals that have arisen during the crossing of almost all sturgeon species have been studied. Recently, the variety of hybrids has continued to increase. This is due to a decrease in the area of areas that are suitable for spawning. In those reservoirs where egg deposition is possible, there is a large accumulation of individuals of various species.
Sturgeon larvae live for a long period, feeding on the contents of the yolk sac. After resorption of its walls, they exist due to eating small zooplankton, and a little later. benthic organisms.
The fry begin their journey along the river and end up in the sea in the summer. The situation is somewhat different in large reservoirs. Here juveniles can stay for two to three years. But after that she will certainly start her way to the sea.
There are huge natural nurseries for sturgeon fish. These are such inland seas as the Azov, Caspian and Black seas. In them, fish feed and grow until puberty, as well as in the periods between spawning.
Sturgeon fish are long-lived. The only exception is sterlet. Sexual maturation of these fish occurs late, only when they reach a significant size. For spawning, sturgeons rise into rivers. However, spawning does not occur annually.
At the end of spawning, sturgeon fish slide back into the sea. Here they feed and grow in size, so that after two or three years they come out again for spawning.
Differences within species
Anadromous sturgeon have a rather complex classification. Within each species, there are specific races. They differ in their period of breeding. So, some of the subspecies go to spawn in the warm period, while others. in the cold.
The existence of different races is also possible due to differences in the use of the places chosen for laying eggs.
Description of representatives of the species
The sturgeon fish that is found in the basins of the Black, Azov and Caspian Seas is the Russian sturgeon. Sometimes the length of some of its representatives reaches two meters. The average weight of the Russian sturgeon ranges from 12 to 24 kilograms. Very rarely, it can exceed 80 kg.
The order “sturgeon” is represented by such a valuable commercial fish as the Siberian sturgeon. These individuals differ from other species in high fatness. The average weight of the Siberian sturgeon is from 9 to 22 kg. There are individuals reaching a hundred or more kilograms.
A very valuable commercial fish of sturgeon breeds. stellate sturgeon. It is found in the Caspian and Azov-Black Sea basins. The main differences of stellate sturgeon are in its long xiphoid snout and a large number of star-shaped light plates on the sides. An interrupted lower lip is characteristic of these individuals. The average weight of stellate sturgeon is in the range of seven to eight kilograms. The value of fish lies in its meat, which has a high taste.
In the rivers of Western Siberia and the European part of the CIS, another representative of sturgeon is found. the sterlet. The average weight of individuals reaches 250-700 grams. Sterlet is distinguished by a larger number of side plates than other sturgeons. These fish have fringed antennae. Sterlet meat is very tasty. Especially good from his ear.
The only fish in the Aral basin belonging to the sturgeon family is the thorn. Representatives of this species can also be found in the Azov, Caspian and Black Seas. The average weight of a stud ranges from 12 to 15 kg. There are individuals up to one hundred kilograms. The spine has a round mouth, a pointed snout and a large first dorsal plate.
Beluga is found in the Azov-Black Sea and Caspian basins. Sturgeons of this species live a very long time and reach enormous sizes. Beluga is considered one of the largest fish that live in freshwater bodies of the world. recently, giant individuals were caught, the length of which ranged from four to five meters, and the mass was more than a ton. Their age was also determined. He was 65-70 years old.
Another representative of the sturgeon family, Kaluga, is very similar to the beluga. This is a valuable commercial fish found in the Amur River. Outwardly, they can be distinguished by the first dorsal plates. Beluga has the smallest, and Kaluga has more than all the others.
These are very peculiar fishes belonging to the sturgeon subfamily. Shovelnose are adapted to life in fast streams of water, carrying a large amount of various suspensions.
A characteristic feature of the representatives of this subfamily are very small eyes, sometimes almost covered with skin. This indicates that vision in these fish does not play a special role in life. But in the shovelnose-like ones, the sense of touch is excellently developed. Its main organs are long antennae and the lower part of the snout. The body of these fish is protected from mechanical damage by large bony plates, which are a kind of shell. It is no coincidence that the shovelnose-like snouts have a flat snout. This shape allows the fish to stay afloat under a fast stream of water.
You can meet representatives of this sturgeon subfamily only in two regions of our planet. Individuals belonging to the genus American shovelnose are found in the Mississippi River basin. They are classified into two types. The first includes the common shovelnose. This is a fish, the length of which reaches 90 cm. Somewhat less often in Mississippi, white shovelnose is found. It is a typical river fish, which is found in very fast flowing parts of the river. The length of representatives of this species reaches one meter.
False shovelnose is a genus of sturgeon living in the basins of rivers such as the Syr Darya and Amu Darya. This fish differs from its American counterparts in a shorter body and fewer bony scutes.
The Central Asian shovelnose bears choose the plains of the river channel as their habitat. These fish do not go to the salty waters of the Aral Sea. The largest Amudarya shovelnose reaches 58 cm in length.Its mass is 760 g. The small representative of this genus has a body, the length of which does not exceed 27 cm.
Shovelnose stalks adhere to pebble and sandy shoals. They can also be found in the ducts. It is not only a flat and wide snout that helps these fish to stay in fast streams of water. Their pectoral fins, which play the role of peculiar suckers, are also distinguished by a special folded shape.
Reproduction of shovelnose stalks occurs on sandy coarse-grained shoals, as well as on stony placers that are found in river beds at a depth of one and a half to two meters. Spawning in these fish occurs in March-April, when the water temperature reaches 14-16 degrees.
The main food of shovelnose sturgeons is benthic invertebrates and fish eggs. Large individuals prefer juvenile sabrefish, barbel and other large prey.
Diversity of representatives
The sturgeon family includes semi-anadromous, anadromous species, as well as individuals living in freshwater reservoirs. You can meet them in the seas and rivers of Europe, North America and northern Asia.
All sturgeon fish are divided into four genera and twenty-five species. Some of them are common on the territory of the former Soviet Union. Here, in the basins of the seas in the south, as well as in the Baltic Sea, in the Amur and in the rivers of Siberia, three genera and thirteen species are found.
Sturgeon fish, the names of which are presented below, include in their list:
All of them are passable. Only one freshwater sturgeon fish. This is a sterlet.