Xinjiang goby (Xinjiang tiger head fish)

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Xinjiang goby

This site is a website about aquarium industry, this article introduces Xinjiang goby, and Xinjiang tiger head fish corresponding to the relevant information, hope to be helpful to Fish friends, thank you for following our Xianglong Fish Farm.

A list of the contents of this article:

• 1 、What is the smallest fish in the ocean?

• 2 、What kind of fish are there in the world

• 3 、What is the smallest fish in the world? can someone tell me?

• 4 、At present, the more common cold water fish are Sturgeon, rainbow trout, what are the species of cold water fish?

• 5 、How many kinds of fish are there?

What is the smallest fish in the ocean?

The smallest fish found so far, distributed in Pacific waters. The scientific name is

Schindleriidae Simpson's microfish Schindleria fish

The picture below shows Schindleria brevipinguis (Fat Baby Fish)

They are slender in shape and look like small worms. They are finless, toothless and scaleless. The body has no pigmentation except the eyes, and the whole body is transparent. Female fish spawn when they are 2 to 4 weeks old. "fat baby fish" generally live for about 2 months, which is known as "the smallest fish in the world".

What kind of fish are there in the world

Special function

Editing

Fish that can fly

The swallow ray fish has a long, flat, round body and is slightly fusiform. The general body length is 20cm to 30cm.Xinjiang goby, weighing 400 to 1500 grams. The back is quite wide, the sides are flat to the tail tapering, and the ventral side is very narrow. The head is short, the kiss is short, the eye is big, the mouth is small. The teeth are fine and the upper and lower jaws are in a narrow band. The dorsal fin is opposite to the anal fin at the back of the body. The pectoral fin is long and wide, reaching the end of the anal fin.Xinjiang gobyThe ventral fin is large and posterior, reaching the end of the anal fin. The fins stretch like the wings of a dragonfly.

Walking fish

Turtle shell climbing perch

The turtle shell climbing perch lives in a still, slow-flowing, muddy body of water. When the water body dries up or the environment is not suitable, often rely on swinging the Gill cover, pectoral fin, turning over and other methods to climb over the embankment, slope, move to new waters, or lurking in the mud. The suprabranchial apparatus of the turtle shell climbing perch is very developed and can breathe air, so it can stay away from the water for a long time and can live for a long time when the water body is anoxic, out of water, or in slightly moist soil. Turtle shell climbing perch Feeds on small fish, shrimp, zooplankton, insects and their larvae.

Vocal fish

Kangji eel can make a barking sound.Xinjiang gobyThe electric catfish can bark like a cat, the cuttlefish can make a dog's cry, the cuttlefish can imitate the crow of a rooster, and the Kanlin fish can not only produce a sound, but also vary from time to time, sometimes like a pig, sometimes like a moan, sometimes like a noise, etc.; seahorses produce drumming-like monotonous sounds. Stone-headed fish are famous for their good calls, such as the sound of rolling, drumming, and the flying of hummingbirds. Their calls are especially common during reproduction.Xinjiang gobyThe cluster.

Fish that can generate electricity

Electric eel

The bodies of some fish can generate electricity, and the voltage they emit is several times higher than the voltage we use in our lives. There are about 500 species of fish with power generation capacity, such as electric eel, electric catfish, electric eel, electric ray and so on. All kinds of fish that generate electricity have different levels of current and voltage. The electric ray has a flat and orchid body, with a long tail, like a ball fan. The electric catfish, which lives in the Nile in Africa, is only 1 meter long, but it can emit a high voltage of 350 volts.

Glowing fish

All kinds of glowing fish (7)

Some fish emit light, such as hairtail and faucet fish along the southeast coast of China, which are emitted by the light-emitting bacteria attached to the body, while more fish are emitted by the light-emitting organs of the fish themselves.

Candlelight fish its abdomen and ventral side have multiple lines of light, like rows of candles, hence the name candlelight fish deep-sea bald fish head flat, covered by a pair of large light emitters, the large light emitter may play a visual role.

A fish drowned in the water

Fish have gills, can breathe in the water, can rise and fall freely in the water. However, some people say that fish living in the water will also drown. Is this true?Xinjiang goby?

Ridiculous as it sounds, it is true. Swim bladder is a "lifebuoy" for fish swimming. It can adjust the specific gravity of fish by inflating and deflating. In this way, fish need only the least muscle activity when swimming, so that they can maintain a steady state of not sinking or floating in the water. However, when the fish sinks to a certain water depth ("critical depth"), the great pressure from the outside world will make it impossible for the fish to adjust the volume of the swim bladder. At this time, it suffered less buoyancy than its own gravity, so it could not help sinking to the bottom of the water, could no longer float, and eventually drowned because it could not breathe. Although fish can still float up by swinging their fins and tail, it won't help if they sink too deep.

Reasons for migration

Editing

The life of fish is varied. Most fish live either in fresh water or in sea water. Less than 10% of fish spend part of their time in the ocean and the other part of their time in fresh water. They migrate back and forth between two habitats, called migration. If you grow in the ocean but need to breed in fresh water, it is called river migration (such as Chinese Sturgeon), and if you grow in fresh water but need to breed in the ocean, it is called downriver migration (such as eel). If the migration of fattening and reproduction occurs between rivers and lakes, it is called semi-swimming fish, which are generally fattened in lakes and spawn in rivers (such as the four big domestic fish). There are also some fish whose lives are limited to the trunk and tributaries of rivers and migrate only for relatively short distances [2].

There are many reasons for fish migration, first of all, it is affected by external conditions. Fish live in water, and their activities are affected by temperature, current, salinity and other factors. But most of the migration is caused by the change of water temperature. When the water temperature changes, fish have to find a suitable living environment, resulting in migration. Because the lateral sensory organs on both sides of their bodies are particularly sensitive to the stimulation of the current, they can help the fish determine the speed and direction of the current.

Endangered fish

Editing

Chinese Sturgeon

Fish treasures-- Chinese Sturgeon

Amur Sturgeon, Amur Sturgeon

Amur Sturgeon with seven floats

A bird comparable to a bear's paw

The longest freshwater fish-White Sturgeon

Salmon with the lowest latitude-- Masumaha, Taiwan

Zhe Luo fish up and down

Precious cat fish, tiger salmon in northwest Sichuan

Qinling precious fish-- Qinling fine scale salmon

Northern salmon, a big white fish in Xinjiang

Heilongjiang big white fish-- Wusuli white salmon

Rare cold water fish-Heilongjiang fennel

The king of freshwater fish-- fragrant fish

The King of Eel-- Anguilla Anguilla

Tetrabranchial fish

Burning oysters-rouge fish

Taiwan mackerel-mustard

Subtropical mackerel-Heteroptera

Twin tails-- Chengdu Fang

Baiyun Golden Silk-Tang Fish

goldfish-Lin's crucian carp

Jinbai Niang-rare minnow

Duck-billed fish

Small White Fish-Xinjiang Yaro Fish

Tropical swordfish-big fin fish

Taiwan small mackerel-Taiwan fine fish

Small White Fish in Dianchi Lake-Silver White Fish

Yunnan mackerel, a red-tip oil fish in Dianchi Lake

The King of Europe-- European Giant Catfish

What is the smallest fish in the world? can someone tell me?

The world's smallest fish, goby, is known as the world's smallest fish, generally distributed in the Philippines, generally about 0.6 centimeters long, is the world's smallest fish. Goby fish live in some rivers and lakes in the Philippines, as well as in the oceans around the Philippines. Maybe it is because it is too small to look like a fish but a shrimp, so people call it goby. The body length of the goby is 2000 times longer than that of the whale shark, the largest fish on earth. When eating, the goby swallows the sand and mud into its stomach, and then filters out the food from the operculum. The goby has a small range of activities, and many goby live with invertebrates such as corals, sponges and whips. Although the goby is very small, it has a strong fecundity, so the number of individuals is so large that local residents in the Philippines often catch them as food. It is very interesting for local women to put goby fish into a special glass bead-shaped fish tank to make earrings and wear them. In addition, in addition to growing small, goby is also the shortest-lived vertebrate in the world, generally living for 2-3 years, up to 4 years. A fish on Australia's Great Barrier Reef can live up to 59 days. Goby, the world's smallest fish, was replaced by a new fish called fat baby fish in 2004. "Fat baby fish" scientific name Schindleria brevipinguis, also known as Stott miniature fish, its slender shape, looks like a small bug, they are finless, toothless, scaleless. The body has no pigmentation except the eyes, and the whole body is transparent. Female fish spawn when they are 2 to 4 weeks old. "fat baby fish" generally live for about 2 months, which is known as "the smallest fish in the world". In the latest issue of the Journal of Research published in the Australian Museum on July 8, 2004, Australian scientists officially announced that they had identified the world's smallest and lightest fish. This kind of fish is only about 7 millimeters long and weighs 1 milligram, and 1 million can make up to 1 kilogram. It can be called a well-deserved "small generation" among vertebrates. Scientists have registered the fish as a new species and declared it as the smallest vertebrate in the Guinness Book of Records. The average body length of the fish is only 7mm for males and about 8.4mm for females, and it is estimated that even the smallest hooks are impossible for them to swallow. In addition to goby and fat baby fish, there are also two kinds of fish. Guojing has become the smallest fish in the world-commonly known as willow root fish distributed in the upper reaches of Heilongjiang, the upper reaches of Nenjiang River and Suifen River. Yalu River, Ertix River and Tumen River in Xinjiang have also been found. The smallest fish in Sumatra in January 2006, the fish found by scientists in the forest marshes of Sumatra, Indonesia, won the "laurel" of the world's smallest fish, its body length is only 7.9 mm.

At present, the more common cold water fish are Sturgeon, rainbow trout, what are the species of cold water fish?

At present, the more common cold water fish are Sturgeon fish, rainbow trout, white spot pike, brown trout, cod, Russian Sturgeon, Loach and so on. These species belong to the category of cold-water fish. When cold-water fish live in the wild, they mainly eat small insects, microorganisms, aquatic insects and other small things.

What are the species of cold water fish in our country?

There are some species of golden Sturgeon, silver salmon, rainbow trout, mountain female Sturgeon, sunlight white spot salmon, high white salmon, Atlantic salmon, fine scale salmon and Sturgeon. These are all edible.

2. What is the regional distribution of common cold water fish?

Salmon fishes, such as rainbow / brown trout listed above, are now common in some areas of northeast China. Pike family and white spot pike are common species in Xinjiang, China. The cold-water fish are ferocious, which is no different from the fish in the Yangtze River. Sturgeon, mainly Russian Sturgeon, is a typical Siberian cold water fish. Some species of Loach, such as Loach, North Loach, etc., are mostly produced in the Northeast. The cod family, the river Sturgeon, has the most dorsal fins among the fish.

What do cold-water fish eat?

1. There are many kinds of cold water fish, but their eating habits are all the same. in wild waters, they mainly look for some small miscellaneous fish, aquatic insects, microorganisms and so on.

2. If it is artificial breeding, then the cold water fish for feed protein demand is very high. Among them, animal protein feed accounts for about 60% of grain. Other nutrients are also needed.

3. Maggots are the best bait in special breeding industry. The nutrition is very comprehensive. The dry powder of fly maggots contains up to 60% protein. The fat is about 8%. And there are all kinds of amino acids and other nutrients. Feed with dried fly maggots to feed cold-water fish is completely high-quality food. The growth of cold water fish is considerable, and the coefficient of bait is low. If you eat a kilogram, you can grow a kilogram. It has very high benefit.

4. If fresh live fly maggots are prepared to feed cold-water fish, it is equivalent to feed and can be replaced completely. Not only grow well, grow fast, but also not easy to get sick.

How many kinds of fish are there?

Question 1: how many kinds of fish are there in the world? there are more than 20,000 species of fish in the world. Among them, there are about 73 species of round stoma, 800 species of chondrofishes and 20,000 species of bony fishes. There are about 3000 kinds of fish in our country. Among them, there are more than 2100 species of marine fish. Freshwater fish about 1010 common freshwater fish species! China is rich in freshwater fish resources, coupled with artificial culture, the market supply is sufficient. Among them, carp, silver carp, grass carp, herring are the most common, in addition to eel, carp and so on. Carp is one of the best freshwater fish, with white scales with metallic luster, red tail, tender meat and delicious taste. The Yellow River carp is particularly popular. Grass carp, also known as grass green, with a yellow body color, is one of the most productive freshwater fish. This kind of fish is characterized by fast growth, heavy body and fat head, but its meat is thicker and inferior to that of carp. Silver carp is divided into silver carp and flower silver carp (commonly known as fat-headed fish). Silver carp white body, small scales, large head, fat meat, delicious, the head is the fattest, especially suitable to be Fish Head en Casserole. Crucian carp, also known as Carassius auratus, is flat and wide, with obvious back uplift and small scales, which is characterized by delicate meat and large taste, but with many small thorns, crucian carp is most suitable for soup. The little crucian carp is suitable for crisp fish. Herring, also known as black fin, long, cylindrical, black spine, milky white belly, white and full meat, is a kind of delicate flesh in freshwater fish; it contains a lot of fat, especially a section of meat in the breast fin and two parts of meat in the head and tail, the lungs of herring is the tender part of the fish body, contains a lot of fat, the famous dish "roast bald lungs" is made with herring lungs, cooked hot to eat, plump and beautiful. Eel, also known as long fish and rice field eel, has a long and thin body, thick head and tail, dark brown back, yellow belly and small scaleless eyes. the meat of this kind of fish is extremely delicate and delicious, so it is regarded as one of the best fish. Soft-shelled turtle, also known as soft-shelled turtle, tender meat, rich nutrition, is a high-grade tonic. ornamental fish refer to those who have ornamental value and have bright colors or strange shapes. It is usually composed of three major strains, namely temperate freshwater Ornamental fish, tropical freshwater ornamental fish and tropical marine ornamental fish. Temperate freshwater ornamental fish mainly include red crucian carp, Chinese Goldfish and Japanese koi. There are three series of tropical freshwater ornamental fish, one is lamp species, the second is fairy fish, and the third is arowana. Marine ornamental fish mainly come from coral reef waters in the Indian Ocean and Pacific Ocean, with many species and strange sports lottery, with a primitive and mysterious natural beauty.

Question 2: how many species of fish are there in China? according to relevant data, there are about 20500 species of fish in the world, of which 8000 species live in warm seas, 1130 species live in the cold sea, 220 species live in the upper ocean zone, and about 8275 species of freshwater fish live in rivers and lakes.

According to the book "Chinese Fish Retrieval", there are 2831 species of fish in China, including more than 800 species of freshwater fish.

Distribution of freshwater fishes in China

China is one of the countries with more fresh water surface in the world, with an area of about 300 million mu, of which the water surface for fish culture is about 7500 mu. Most of our country is located in the temperate zone or subtropical zone, with mild climate and abundant rainfall, which is suitable for fish growth. There are also grass, silver carp, bighead carp, green, dace carp, crucian carp, blunt snout bream and other excellent fish culture techniques, so it is the most developed country in freshwater aquaculture industry in the world. Regardless of the farming area and total output, it occupies a leading position in the world. Due to China's vast territory, different geography and natural environment, fish species and pattern characteristics in different regions, according to the regional classification of climate, the distribution of fish is as follows:

Southeast of ↑: including Guangdong, Guangxi, Yunnan, Guizhou, Fujian, Taiwan and Hainan Island

↑ river plain area: including the middle and lower reaches of the Yangtze River, the lower reaches of the Yellow River and the lower reaches of the Liaohe River

↑ Northern District: Dongwei and other places

↑ Northwest Plateau region: including Xinjiang, northern China, Inner Mongolia, Qinghai, Gansu, Shaanxi, Shanxi and other places

↑ Nulan District: including the south, Sichuan and western Yunnan. Nujiang, Lancang, Jinsha, Yarlung Zangbo

Southeast: including Guangdong, Guangxi, Yunnan, Guizhou, Fujian, Taiwan and Hainan Island. The main warm-loving fishes grow in these areas, with a wide variety of species, such as mud carp, curly fish, Chinese Spanish mackerel, Dongpo fish, flower Loach, Laguang long Loach, sand Loach, flat head Loach, rock climbing Loach, flat fin Loach, small snout fish, long fin catfish, beard catfish, eel, yellow rice eel, Douyu eel, climbing bass and so on. The main farmed fish are green, grass, silver carp, bighead carp, dace, snout bream, catfish, tilapia and other southern species.

River plain area: including the middle and lower reaches of the Yangtze River, the lower reaches of the Yellow River and the lower reaches of the Liao River. In addition to river basins, there are many lakes, which are the main producing areas of freshwater fish in China. There are many natural aquatic fish, such as green, grass, silver carp, bighead carp, common carp, crucian carp, catfish, fish, blunt snout bream, Anguilla Anguilla, eel and so on. The production of silverfish in Taihu Lake, Sturgeon, mackerel and mackerel in the Yangtze River is very high.

Big. The farmed species are green, grass, silver carp, bighead carp, common carp, crucian carp, blunt snout bream, tilapia and some hybrid species of carp.

Northern region: here mainly produces cold water fish, natural water is rich in Sturgeon, pike, Zhe Luo salmon and other fish, such as salmon, pike, fragrant fish, snow fish, quasi-red piggy fish, eight eels and so on are unique and representative fish here. Artificial culture except green, grass, silver carp, bighead carp, common carp, crucian carp and blunt snout bream, but also raise red trout.

Northwest Plateau region: including Xinjiang, northern China, Inner Mongolia, Qinghai, Gansu, Shaanxi, Shanxi and other places. This is a typical continental climate. The natural water body is rich in Chinese bow fish, yellow claw fish, naked carp, etc., as well as Loach, Loach and other fish. The main aquaculture is still the same as everywhere.

Nulan District: including the south, Sichuan and western Yunnan. The Nujiang River, Lancang River, Jinsha River and Yarlung Zangbo River all flow here, so that the fish from the southeast and northwest plateau regions coexist here through the river, such as mud carp, Chinese Spanish mackerel, Dongpo fish, flat fin Loach, sand Loach, striped Loach, Xushan, sea bass, yellow repairs, snakehead, Chinese bow fish, etc., forming the characteristics of Mixed fish fauna in the southeast and northwest regions. The main culture is still green, grass, silver carp, bighead carp, common carp, crucian carp, blunt snout bream and a large number of hybrid varieties of carp in recent years.

Question 3: how many kinds of fish are there in China? There are about 3000 kinds of fish in our country. Among them, there are more than 2100 species of marine fish. There are about 1010 kinds of freshwater fish, which are common freshwater fish. China is rich in freshwater fish resources, coupled with artificial culture, the market supply is sufficient. Among them, carp, silver carp, grass carp, herring are the most common, in addition to eel, carp and so on.

Question 4: how many kinds of fish are there? At present, there are three kinds of fish living in the world: no palate, cartilage and bone. There are about 18900 species of fish in the world.

Please accept if you are satisfied.

Question 5: how many species of fish have been identified? about 2000 species are the most primitive and lowest group of vertebrates in the subphylum Vertebrate. Fish is rich in animal protein and phosphorus, rich in nutrition, delicious taste, easy to be digested and absorbed by the human body, which plays an important role in the development of human physical strength and intelligence. Other parts of the fish body can be made into cod liver oil, fish glue, fish meal and so on. Some fish, such as goldfish and tropical fish, are colorful and have high ornamental value. Fishing is a sport that is beneficial to physical and mental health and is loved by people all over the world. In addition, some fish, such as mosquito-eating fish, are beneficial to human health by eliminating transmission vectors such as malaria and yellow fever. Classified fishes are generally divided into two categories: jaws and jaws. The edentulous vertebrae are cylindrical and exist for life without upper and lower jaws. The Gill originating from the endoderm is saccular, so it is also known as cystic Gill; the brain is well developed, generally with 10 pairs of brain nerves; there are pairs of visual and auditory organs. The inner ear has 1 or 2 semicircular canals. There is a heart and the blood is red; the epidermis is made up of multiple layers of cells. The even fin is underdeveloped, and some Paleozoic bone soft-shelled turtles have pectoral fins. The classification of jaw-less class is different, which is generally divided into: blind eel class, cephalodon class, seven-Gill eel class, fin turtle class. Jaws with upper and lower jaw. Most of them have pectoral and ventral fins; the endoskeleton is well developed, the adult notochord is degenerated, has a spine, and rarely has a bony exoskeleton. The inner ear has 3 semicircular canals. The Gill is formed by ectodermal tissue. It is composed of crustacean, chondrofishes, echinococciformes and bony fishes. Among them, there are only fossil species in the class Scutellaria and Ctenophora. Distributed all over the world, mainly inhabiting low-latitude sea areas, some species inhabit fresh water. The existing species belong to plate branchial subclass and whole head subclass respectively. There are more than 600 species of Phyllobranchia and 180 species in China, most of which are in the South China Sea. There are about 30 species of 3 families, 6 genera and 5 species of 3 genera and 2 families in China. The endoskeleton of bony fishes has been ossified with sutures, the head is often covered with capsular bone, and the body is covered with hard scales or bone scales. It is the most luxuriant branch of living fishes, which can be divided into three subclasses: total fins, lungs and radians. The subclass Radioptera is the most common group. Among them, Perciformes have the most species, except that Cyprinformes are distributed in freshwater and Salmon orders are mostly river-tracing fishes, other orders are mainly distributed in the ocean. Nowadays, the production of herring and cod is the highest in the world fishery production, followed by cod, which is close to half of the total fishery production in the world in that year. There are more than 2000 species of bony fishes and more than 700 species of freshwater bony fishes off the coast of China. Fish body structure and life activities although fish are the lowest vertebrates, they already have quite complete organ systems such as bones, muscles and digestion, circulation, respiration, excretion, reproduction and nerve sensation, which can carry out a wide variety of life activities. Its morphological structure is not only related to phylogeny, but also reflects the adaptability to water environment. The adaptability of the external shape and the body shape of sports fish to their living environment is mainly as follows: the fish living in the upper layer of the water body is generally spindle-shaped, the fish living on the seafloor is flat, the coral reef fish are mostly side-flat, and the living camp is cylindrical. Some fish that live in seaweed show mimicry, and tuna are torpedo-shaped, suitable for fast swimming. The movement of fish mainly depends on the alternating contraction of the muscles arranged on both sides of the body, making the body and caudal fin swing left and right, and the other fins play a balancing and steering role. After metamorphosis, the fins of some fish also have the functions of attack, self-defense, feeding, reproduction, vocal, crawling, gliding, jumping, climbing, breathing and so on. Swim bladder can adjust the specific gravity of fish and help float and sink. The skin of skin, scale and body color fish consists of two parts: epidermis and dermis. The epidermis consists of several layers of living cells, during which mucous cells are distributed to reduce friction and protect the body. Pearl is the product of keratinization of local epidermal cells and is related to reproductive activities. The venom glands and luminous organs of a few fish are derivatives of the epidermis. Fish scales are divided into shield scales, hard scales and bone scales. The scales of cartilaginous fish are called shield scales. Hard scales and bone scales are usually produced from the dermis. The scaly tile arrangement is easy to move and protect the fish. Many fish that swim fast and live in camps often have scales that degenerate or disappear. The body color of fish is often deep on the back and light on the abdomen, which is a protective color adapted to the environment. However, fish living in coral reefs often have bright colors and markings, which are generally divided into protective colors and warning colors. Skeletal and muscular fish have well-developed central axis and appendage bones, which play an important role in protecting the central nervous system, sensory organs and internal organs, supporting body drive and the activity of the whole body. The axial skeleton consists of the skull (chest and pharynx) and the spine. The pharyngeal skull is a group of bones around the front of the digestive tract that supports the mouth and gills. The spine consists of many vertebrae. The smooth muscle and cardiac muscle of fish are not different from those of higher animals, but.

Question 6: how many fish species are known in China? the number of known fish species in China is 3862, and the number of known species in the world is 19056, accounting for 20% of the world.

Question 7: how many kinds of fish are there in the world? there are more than 20,000 species of fish in the world. Among them, there are about 73 species of round stoma, 800 species of chondrofishes and 20,000 species of bony fishes.

There are about 3000 kinds of fish in our country. Among them, there are more than 2100 species of marine fish. About 1010 species of freshwater fishes

Question 8: which kinds of precious fish are there in China? the contents of fish class PLSCES in China's Wildlife Protection Law are as follows:

Perciformes PERCIFORMES

Sciaenidae of the family Cephalidae

Bahaba taipingensis Ⅱ

Shape and item SCORPAENIFORMES

Cottidae of the family Dulcidae

Trachidermus fasciatus Ⅱ of Songjiang perch

Ctenoptera GASTEROSTEIFORMES

Syngnathidae of Phalosauridae

Kechu sea horse fish Hippocampus kelloggi Ⅱ

Cypriniformes CYPRINIFORMES

Catostomidae of Carminidae

Myxocyprinus asiaticus Ⅱ

Cyprinidae Cyprinidae

Tang Yu Tanichthys albonubes Ⅱ

Big head carp Cyprinus pellegrini Ⅱ

Gold thread? Named subspecies Sinocyclocheilus grahami grahami Ⅱ

Aspiorhynchus laticeps Ⅰ

Schizothorax taliensis Ⅱ in Dali

ANGUILLIFOMES of Anguilla

Anguillidae of Eelidae

Anguilla marmorata Ⅱ

Salmon SALMONIFORMES

Salmonidae Salmonidae

Sichuan Zhe Luo fish Hucho bleekeri Ⅱ

Brachymystax lenok tsinlingensis Ⅱ in Qinling Mountains

ACIPENSERIFORMES of Sturgeon

Acipenseridae of Sturgeon family

Chinese Sturgeon Acipenser sinensis Ⅰ

Acipenser dabryanus Ⅰ

Polyodontidae of Sturgeon family

White Sturgeon Psephurus gladius Ⅰ

A total of 7 orders, 9 families and 15 species

Question 9: how many kinds of grass carp are there? China is rich in freshwater fish resources, coupled with artificial culture, the market supply is adequate, of which carp, silver carp, grass carp, herring are the most common, as well as eel, carp and so on. Carp is one of the best freshwater fish, with white scales with metallic luster, red tail, tender meat and delicious taste. The Yellow River carp is particularly popular. Grass carp, also known as grass green, with a yellow body color, is one of the most productive freshwater fish. This kind of fish is characterized by fast growth, heavy body and fat head, but its meat is thicker and inferior to that of carp. Silver carp is divided into silver carp and flower silver carp (commonly known as fat-headed fish). Silver carp white body, small scales, large head, fat meat, delicious, the head is the fattest, especially suitable to be Fish Head en Casserole. Crucian carp, also known as Carassius auratus, is flat and wide, with obvious back uplift and small scales, which is characterized by delicate meat and large taste, but with many small thorns, crucian carp is most suitable for soup. The little crucian carp is suitable for crisp fish. Herring, also known as black fin, is long and cylindrical, with a jet-black spine, milky white belly and white flesh. It is a kind of delicate flesh in freshwater fish. Contains a lot of fat, especially the chest fin, tail fat, such as braised "paddle" and braised head and tail, that is, herring chest fin part of a section of meat and head and tail of two parts of meat, herring lung is the most tender part of the fish assessment, contains a lot of fat, the famous dish "braised bald lung" is made with herring lungs, cooked hot, plump and beautiful. Eel, also known as long fish and rice field eel, has a long and thin body, thick head and tail, dark brown back, yellow belly and small scaleless eyes. the meat of this kind of fish is extremely delicate and delicious, so it is regarded as one of the best fish. Soft-shelled turtle, also known as soft-shelled turtle, tender meat, rich nutrition, is a high-grade tonic.

Question 10: how many kinds of fish are under the sea in the world according to the survey. At present, there are 21,723 species of fish, of which there are about 12000 species of marine fish. There are 3187 species of marine fish in China. For the classification of these fish, it is more common to be divided into three classes. First, Cyclostomata is the most primitive fish with no upper and lower jaw, so it is also called jaw-free. The body surface is scaleless, the body is slender and eel-shaped, and the bones are completely cartilaginous. No even fin, no shoulder strap and belt, notochord exists for life, primary vertebral body. With separate and unpaired nostrils, the gills formed by the endoderm are in the muscle sac and open in vitro. The second is Chondrofishes (Chondrichihyes). The endoskeleton is full of bone, but is often reinforced by calcification. Any real bone tissue: the body surface is covered with shield scales, spines, or without scales. There are no sutures in the brain. Each side of the head has branchial cleft, opening in vitro. The intestine is short and has a spiral valve. No fat. The male lives in a mater specialized from the inside of the ventral fin, which is called the flipper. To inseminate in vivo. Oviparous, oviparous or viviparous, with a crooked tail. Chondrofishes are widely distributed in the ocean, but mainly at low latitudes. The third is Osteichthyes. It is one of the most advanced fish and is now the most prosperous class. The endoskeleton is ossified, the head floats with membranous bone, and the bone has bone suture. The body surface is covered with hard or bony scales, or without scales. One pair of outer branchial foramen, Gill septum degenerated, Gill filaments supported by double rows of Gill strips, usually with fat, fin strips with many segments, and no spiral valves in the intestine. Some fish have dorsal and ventral ribs and solid otolith. It is generally in vitro fertilization without cloaca. It is known that there are about 18,000 species of bony fish in the world. The size of marine fish can be divided into: ① torpedo type, this type of fish inhabit the middle waters, the most good at swimming, such as mullet, mullet shuttle, tuna and so on. ② arrow type. Similar to the torpedo type, but the body is longer, odd fins move backward, inhabit the surface water, good at swimming, such as pike, jaw needle fish, ③ lateral flat type. This type of fish, with increased dorsal and ventral axis height and extremely flat left and right sides, can be divided into grouper type, Mola type and flounder type, which inhabit near bottom and bottom respectively. ④ snake type. This type of fish has a slender body and a circular cross-section, and generally lives in undersea plants, such as eels and sea dragons. ⑤ band pattern. The height of the body is extended to the lateral flat type, and it is not good at swimming, such as belt fish, royal belt fish and so on. ⑥ ball. This type of fish is almost spherical, and the caudal fin is generally underdeveloped, such as box, some round-fin fish, etc., ⑦ longitudinal flat type. This type of fish has a reduced dorsal ventral axis and a flat body, such as various rays, cK and so on. The fin of fish is the main movement and balance organ of fish. Pairs are called even fins, including pectoral fins and ventral fins; unpaired fins are called odd fins, including dorsal fins, anal fins and caudal fins. The caudal fin is born in the tail of the fish and has the functions of turning and pushing. It is generally divided into a round tail (the upper and lower leaves are of equal size, such as fish, tuna, etc.), a crooked tail (the upper leaf is more developed than the lower leaf, which contributes to upward movement, such as sharks), and an orthomorphic tail (the lower leaf is more developed than the upper leaf, which helps to move downward, such as flying fish). There are three ways of reproduction of fish, that is, oviparity, oviparity and viviparity. The vast majority of fish lay eggs. Egg-laying fish generally discharge mature eggs directly into water, fertilize in vitro and complete the whole development process, but there are also a small number of fish (such as some sharks) are fertilized in vivo, and the fertilized eggs still develop in vitro. Oviparous fish generally fertilize the egg in the body, and the fertilized egg develops in the body, but the nutrition of the embryo body depends on its own yolk supply and has nothing to do with the mother, such as white spot shark, white spot shark, Japanese partial shark, allowable pressure plough ray, sea crucian carp and black (fish king) and so on. Viviparous fish generally fertilize and develop in the mother, and the embryo formed by the fertilized egg has a blood circulation relationship with the mother. Its nutrition not only comes from the yolk of the body, but also needs maternal supply, such as gray star shark and so on. The number of eggs laid by fish is much higher than that of terrestrial vertebrates, and the number of eggs laid varies greatly from several large eggs (such as many sharks) to 300 million floating eggs (such as Molas). Generally speaking, fish that do not protect their eggs after spawning lay more eggs, such as snapper lays about 1 million eggs, eels produce 700-15 million eggs, and fish that protect eggs after spawning lay fewer eggs, such as tens to hundreds of eggs laid by the hippocampus. The growth rate and individual size of fish are very different from stage to stage. Studies have shown that the smallest fish is the micro-goby, which is only 7.5-11.5 mm long, and the largest fish can reach 20 meters, such as whale sharks. During the fastest growing period of fish, usually before sexual maturity, most of the food consumed by fish is used for the maturation of sexual products and the storage of fat, and only a small part is used for length growth.

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