Are crucian carp and carp the same creature? Why?

Crucian carp and carp are different species! Belong to different creatures!

Crucian carp and carp are similar in shape, but crucian carp has no beard.

Generally, the largest individual of crucian carp does not exceed 1.5kg, and the largest individual that crucian carp can see is dozens of kilograms. The growth rate of crucian carp is relatively slow, and its feeding habits are relatively shy and mild. Carassius auratus likes to float in the morning and on the same day to absorb oxygen and prey on small debris and fish eggs in the grass. Carassius auratus likes to cluster, and the breeding season of Carassius auratus is from April to June at most. Generally, a female fish can be chased many times by more than five males.

carp

Carp is a temperate freshwater fish native to Asia. I like to live in a warm lake or a slow-flowing river on the plain. Distributed all over the world except Australia and South America. It has been used as ornamental fish or edible fish in China and Japan for a long time, and it has also been cultivated as edible fish in Germany and other European countries. The dorsal fin root is long, without fat fins, and the mouth usually has whiskers, but some don't. There are throat teeth deep in the mouth, which are used to grind food. There are many kinds of carp, about 2900 species. Carp with prolactin carp soup for viewing.

Watch koi fish being farmed all over the world. Japan is the most advanced, mating with beautiful carp. Although the colors are different, they all belong to the same category.

Carp is a benthic omnivorous fish that eats both meat and vegetables. The bait spectrum is wide, the snout bone is developed, and it often feeds on mud. Carp is also a low-temperature animal, and its body temperature changes with the change of water temperature, so it does not need to consume energy to maintain a constant body temperature, so the total amount of bait intake is not large. At the same time, carp, like most freshwater fish, belongs to a kind of fish without stomach, with short intestine and fast metabolism, so its feeding habit is to eat less and eat more. The digestive function of carp is closely related to the water temperature, and its feeding is seasonal. Winter (especially under the ice) is basically in a semi-dormant state, and body fat is exhausted in winter. Spring is coming, and it is eager to eat high-protein food to supplement it. As late autumn and winter approach, in order to hoard fat, there will also be a peak period of "grasping food", and it is also based on high-protein bait. So early spring. Fishing carp in late autumn should be mainly based on animal bait such as earthworm and river shrimp. After the spring, with the increase of temperature, the fish's food intake increased, and the quality of bait was not important, and the number rose to the first place. So in late spring, all summer and early autumn, carp are mainly vegetarian. At this time, you should use surface bait and bad food when fishing.

Although carp is a benthic fish, it does not mean that its active area remains unchanged. Seasonal changes, water temperature changes. Changes in wind direction, air pressure, horizon, water quality, water flow, water level fluctuation, dissolved oxygen in water, prey environment, etc. , will change the activity area of fish at any time, so that they are often active to a large extent. If they are in a large area of water, this is called' migration'. Compared with other freshwater fish, carp has the same habits and special habits. These habits are mainly determined by the needs of reproduction, feeding and aerobic survival.

Herb-loving habits All kinds of water plants and aquatic plants thrive in lush waters, and it is also a place where all kinds of plankton and benthos thrive, where fish can eat rich food. Lush aquatic plants are also excellent spawning places for fish. Every spring in the breeding season, these places are places where fish gather.

Top flow habit A pond is often full of streams or canals, which not only brings a lot of fresh bait to the fish in the pond, but also has a high degree of dissolved oxygen at the import and export, making it an ideal place for fish to feed and absorb oxygen. The so-called "flag moves with the wind, fish follow the water" is the truth.

Follow-the-wave habit In a pond with a large water area, when encountering a windy day, the water surface will often set off a big wave, pushing the food such as plankton on the water surface to accumulate in the downwind, and these baits are driven into the water by the waves, so this area has become a natural feeding ground for fish. Where the waves are rough, the dissolved oxygen in the water will definitely be high (this is the same as the aerator in a high-density fish pond). Based on the above two points, fish have developed the habit of drifting with the flow.

Warming habits When the natural water temperature is low, it is obvious that all kinds of fish like to move to the sunny waters for food, rarely move to the shady slopes and shady waters, and will not stay still for a long time in the deep water with low water temperature. In early spring and late autumn, the shallow water with the leeward facing the sun is warmer in the daytime sunshine, so fish love to swim around here for food. However, the temperature difference between morning and evening is large, and the water temperature in shallow water area drops rapidly and greatly, so fish usually retreat to the deep water area where the water body is relatively warm. As the water temperature rises and falls day and night, fish will float during the day and sink at night. On the contrary, in hot summer, the shallow waters are cool and pleasant in the morning and evening, and fish like to flock to them. During the day, with the increase of air temperature and water temperature, fish gradually move to the deep water area. At noon in midsummer, when the sun is shining and the heat is unbearable, the fish generally retreat to the deepest part of the pond. If you follow the above rules to "find fish", you can basically find its trace.

Social habits Except catfish and snakehead, most fish like to live in groups. Idioms such as "fish crossing the river" and "crucian carp crossing the river" illustrate this habit. So is carp. On the one hand, it is determined by the same eating habits and living habits. In addition, the movement of fish in groups is also a kind of nature and instinct to avoid enemy harm.

The oxygen content of natural water with aerobic and static habits is generally 8- 12 mg per liter. When it falls below 1 mg, most fish will stop eating, "float their heads" and even die. Crucian carp, catfish, etc. It has strong hypoxia tolerance, but carp can't. Generally, dissolved oxygen is required to be above 5 mg per liter. One of the oxygen in water comes from photosynthesis of aquatic plants and the other comes from surface air. Dissolved oxygen is slow in windless weather and good in big waves. Where there is no oxygen, fish will move sensitively to water with high oxygen content. This is the main reason why fish like grass, streams, waves and beaches. Before the thunderstorm, the air pressure was low, the weather was stuffy and the fish didn't take the bait; As soon as the rain cleared up, the fish snapped; Fish don't like to bite people in the dead water area against the wind, and the waves are rough with the wind, so fish are very active; If there is a population injected with fresh water from outside the fat pond, it is the golden fishing belt. ...... All these phenomena explain the same truth: fish flock to places with high dissolved oxygen. In addition, quietness is also one of the obvious characteristics of fish, and carp is no exception. Fish have developed hearing and are extremely sensitive to sounds, especially some sudden and strange high-intensity sounds. After hearing the sound, they will quickly move away from the sound source. Of course, fish avoiding sound is just a general situation. They are not afraid of some natural sounds, such as waterfalls, wind and waves, running water, rice washing and insects falling into the water, but they like it very much. If it is a high-density intensive pond, the sound of throwing granular feed will even make the fish get together.

crucian

Crucian carp, also known as golden crucian carp, is the seed of crucian carp.

Crucian carp (Cyprinidae)

【 Local name 】 Carassius auratus seeds, Carassius auratus, Carassius auratus muscles, Korean fish, saury and Carassius auratus shells.

[Morphological characteristics] It is generally 15 ~ 20cm long. Body side is flat and high, body is thick, and abdomen is round. The head is short and the kiss is dull. No need. The gill harrow is long and the gill filament is slender. The hypopharyngeal teeth are in a row and are flat. Large scale. The lateral line is slightly curved. The dorsal fin is long and the outer edge is flat. The dorsal fin and the gluteal fin have strong third spines and serrated trailing edges. The end of pectoral fin can reach the beginning of ventral fin. The caudal fin is deeply forked. Generally, the back of the body is grayish black, the ventral surface is silvery gray, and the fins are grayish white. Due to the different growing waters, the body color is also different.

【 Origin and season 】 It is produced all over the country all the year round, and crucian carp is the fattest in February-April and August-65438+February.

Economic value is one of the important edible fish in China. Meat is tender and sweet, with high nutritional value. Every100g of meat contains protein13g, fat 1 1 g, and contains a lot of minerals such as calcium, phosphorus and iron. Crucian carp has high medicinal value, sweet and warm nature. Entering the stomach and kidney has the effects of harmonizing the middle energizer, tonifying deficiency, eliminating dampness, promoting diuresis, tonifying deficiency, warming the stomach, nourishing the middle energizer and benefiting qi. In particular, live crucian carp soup has an unparalleled effect on lactation. Melon crucian carp and radish crucian carp are not only delicious, but also can cure diseases and prolong life. A small crucian carp can be made into crispy fish. According to the analysis, every100g of crucian carp meat contains protein13g, fat 1. 1 g, sugar 0. 1 g, thiamine 6.6mg, riboflavin 0.07mg, nicotinic acid 2.4mg, calcium 54mg and so on. Clinical practice has proved that crucian carp meat is effective in preventing and treating arteriosclerosis, hypertension and coronary heart disease.

Medicine believes that crucian carp is sweet and warm. It has diuretic, repercussive, invigorating qi, invigorating spleen, detoxicating and promoting lactation. Suitable for people with spleen and stomach weakness, anorexia, vomiting or diarrhea; Spleen edema, dysuria; Qi and blood are weak, and milk is blocked; Bloody stool, hemorrhoid bleeding, edema, ulcer, etc.

"Compendium of Materia Medica" contains: "Boil the red bean juice to reduce swelling: apply oil to the pudendal sores of housewives to kill insects and relieve pain; Galla Chinensis is brewed to treat blood; Brew tea, simmer clothes to quench thirst; Saihu and garlic simmer and drink to cure qi. " Fish carp

How to distinguish carp from crucian carp

Carp, commonly known as carp seed and carp turn, is willow-leaf-shaped, with a slightly raised back, large scales and bright colors, and whiskers at the mouth. The body color varies from blue to black and gray to gold due to different waters and species.

Carassius auratus, commonly known as melon seed crucian carp, abduction crucian carp and herring, has a flat and wide figure and a prominent back bulge. The difference between it and carp is that it has a wide body and small scales and does not need a mouth. Crucian carp has many thorns, tender meat and delicious taste.

In terms of eating time, it is suitable for eating crucian carp in winter because it is warmer, and it is suitable for eating crucian carp in summer because it is cooler.