CATDOLL : CATDOLL: Crucian carp characteristics (characteristics of crucian carp)

1. Characteristics of Crucian Carp

The scales have some mucus that helps with swimming and makes the body more lubricated.

The lateral line, in simple terms, can make fish more sensitive. For example, when there is a grain of sand next to the fish, the fish can avoid it immediately, which is the effect of the lateral line.

If the dorsal fin is cut off, the fish will lose balance.

2. Physiological characteristics of crucian carp

Crucian carp

Crucian carp, also known as crucian carp and crucian carp seeds.

Crucian carp (Cyprinidae) Carassius auratus

[Place name] Crucian carp, crucian carp, crucian carp, morning fish, knife fish, crucian carp, crucian carp shells.

[Morphological characteristics] Generally, the body length is 15 to 20 cm. The body is flat and tall, the body is relatively thick, and the abdomen is round. The head is short and the snout is blunt. No whiskers. The gill rakers are long and the gill filaments are slender. There is a row of hypopharyngeal teeth, which are flat and plate-shaped. The scales are large. The lateral line is slightly curved. The dorsal fin is long and the outer edge is relatively straight. The third hard spine of the dorsal and anal fins is strong, and the rear edge has serrations. The end of the pectoral fin can reach the starting point of the pelvic fin. The tail fin is deeply forked. Generally, the back of the body is gray-black, the belly is silver-gray, and the fin rays are gray-white. The body color varies depending on the waters where it grows.

[Origin and Season] Crucian carp is produced all year round in waters across the country, with the most plump and delicious crucian carp from February to April and August to December.

[Economic Value] It is one of the important edible fish in my country. The meat is tender, sweet and has high nutritional value. Every 100 grams of meat contains 13 grams of protein, 11 grams of fat, and a large amount of minerals such as calcium, phosphorus, and iron. Crucian carp has extremely high medicinal value. It is sweet, flat and warm in nature. It enters the stomach and kidneys. It has the effects of harmonizing the middle and replenishing the deficiency, removing dampness and promoting diuresis, replenishing the deficiency, warming the stomach and eating, and replenishing the middle and invigorating the body. In particular, the soup of live crucian carp has an incomparable effect on lactation that other drugs cannot match. Crucian carp boiled with winter melon and radish are not only delicious, but also can cure diseases and prolong life. Small crucian carp can be made into crispy fish. According to analysis, every 100 grams of crucian carp meat contains 13 grams of protein, 1.1 grams of fat, 0.1 grams of sugar, 6.6 milligrams of thiamine, 0.07 milligrams of riboflavin, 2.4 milligrams of niacin, 54 milligrams of calcium, 203 milligrams of phosphorus, and 2.5 milligrams of iron. Clinical practice has shown that crucian carp meat is effective in preventing and treating arteriosclerosis, hypertension and coronary heart disease.

Medically, crucian carp is sweet and warm in nature. It can promote diuresis and reduce swelling, invigorate qi and strengthen the spleen, detoxify, and promote lactation. It is suitable for weak spleen and stomach, lack of appetite, fatigue, vomiting or diarrhea; spleen deficiency edema, urination difficulties; weak qi and blood, milk obstruction; blood in stool, hemorrhoid bleeding, edema, ulcers, etc.

"Compendium of Materia Medica" states: "Boiled red beans and taken as juice can reduce edema; roasted oil applied to treat genital ulcers in women, kills insects and relieves pain; brewed gallnuts calcinated and ground to treat bleeding; brewed tea leaves stewed and taken to treat thirst; brewed garlic stewed and ground to drink to treat diaphragmatic qi." Fish Carp

3. Morphological and structural characteristics of crucian carp adapted to life in water

1. Fish's life habits: Live in water all their lives; Body temperature is not constant;

Diverse diet.

Shape: shuttle-shaped, reducing water resistance

Body color: dark back and light belly, for protection

2. Fish body: scales and mucus, which protect and reduce resistance

Lateral line: Determine direction and sense water flow

gills; respiratory organs

Fins: Organs of movement

3. Fish's tail fin: stabilizes the body, propels forward, and controls direction

Sports Skeleton: Protecting and Supporting the Body

Swim bladder: helps fish swim between different water layers

4. Appearance characteristics of crucian carp

The head looks like a small carp, the body is black and fat (some are white), the belly is large and the ridge is raised. The big ones can weigh one or two pounds. They live in soft mud and can nourish the stomach. In March and April, its meat is thick and there are many fish eggs, which tastes very good. Crucian carp is a top-quality fish and lives in freshwater waters such as ponds, lakes, and rivers. The body length is 15 to 20 cm. It is streamlined (also called spindle-shaped), the body is high and flattened laterally, the front half is arc-shaped, the back contour is raised, and the tail peduncle is wide; the abdomen is round and has no fleshy ridges. The head is short and the snout is blunt. No whiskers. The gill rakers are long and the gill filaments are slender. There is a row of hypopharyngeal teeth, which are flat and plate-shaped. The scales are large. The lateral line is slightly curved. The dorsal fin is long and the outer edge is relatively straight. The gill rakers are slender, needle-shaped, and arranged closely. The number of gill rakers is 100 to 200. The third hard spines of the dorsal and anal fins are strong, and the rear edge is serrated. The end of the pectoral fin can reach the starting point of the pelvic fin. The tail fin is deeply forked, the back of the body is silvery gray with a slight yellow luster, the abdomen is silvery white with a slight yellow tint, and the fins are grayish white. The depth of the body color varies depending on the waters where it grows.

The belly is light white and the back is dark gray. When the natural enemies look down from above the water, it is difficult to be spotted because the black back of the fish is the same color as the mud at the bottom of the river; when the natural enemies look up from below the water, it is also difficult to be spotted because the white belly of the fish is almost the same color as the sky; it is often seen in some articles that "the fish belly turns white in the east" in the early morning, which is the reason. It is a protective color.

5. What are the characteristics of crucian carp that adapt to life in water?

First, the fish

They can obtain oxygen from the water by breathing with gills, and have a swim bladder to control buoyancy and sinking.

Fish fins can control swimming and turning, and the body shape and scales can reduce resistance in the water...