CATDOLL : CATDOLL: What is the difference between grass carp and koi?

When you walk into the aquatic area, you will find that fish come in various shapes. Of course, fish with different shapes have different names. The most common fish species on people’s tables are grass carp and carp. For people who don’t know much about aquatic fish, how to distinguish between grass carp and carp? Let’s follow me to take a look.

Differences between grass carp and carp

Differences between grass carp and carp - morphological characteristics

Grass carp is commonly known as silver carp, silver carp, etc. It inhabits rivers and lakes in plain areas, and generally prefers to live in the middle and lower layers of water and nearshore areas with abundant aquatic plants. It is lively, swims quickly, and often forages in groups. It is a typical herbivorous fish. Grass carp feeds on larvae, algae, etc. when it is young. Grass carp also eats some meat, such as earthworms and dragonflies. It hibernates in the deep water of mainstream or lakes. Parent fish have the habit of upstream migration during the reproductive season. It has been transplanted to many countries in Asia, Europe, America, and Africa. Because of its rapid growth and wide source of feed, it is one of the four major freshwater fishes in China.

Carp is commonly known as carp crooked, hairy, etc., and belongs to the Cyprinidae family. The body is flattened and the abdomen is round. The mouth is horseshoe-shaped and there are two pairs of whiskers. The base of the dorsal fin is long, and both the dorsal fin and the anal fin have a thick and serrated hard spine. The sides of the body are golden yellow, and the lower lobe of the tail fin is orange-red.

The difference between grass carp and carp - efficacy and function

The efficacy of grass carp:

1. Grass carp is rich in unsaturated fatty acids, which is beneficial to blood circulation and is a good food for cardiovascular patients;

2. Grass carp is rich in selenium. Regular consumption has the effects of anti-aging and beauty, and also has a certain preventive and therapeutic effect on tumors.

3. For people who are thin and have poor appetite, grass carp meat is tender and not greasy, and can stimulate appetite and be nourishing.

The efficacy of carp

1. Carp protein is not only high in content, but also of good quality. The human body's digestion and absorption rate can reach 96%, and it can provide the human body with essential amino acids, minerals, vitamin A and vitamin D;

2. Carp fat is mostly unsaturated fatty acids, which can effectively lower cholesterol and prevent and treat arteriosclerosis and coronary heart disease. Therefore, eating more fish can help you live a healthy and long life.

Differences between grass carp and carp - nutritional analysis

Carp contains 17.6 grams of protein, 4.1 grams of fat, 25 micrograms of vitamin A, 0.09 grams of riboflavin, 2.7 milligrams of niacin, 1.27 milligrams of total vitamin E, 334 milligrams of potassium, 33 milligrams of magnesium, 2.08 milligrams of zinc, and 15.38 milligrams of selenium per 100 grams. The amino acid content is complete. Carp not only has high protein content, but also high quality. The human body's digestion and absorption rate can reach 96%, and it contains essential amino acids, minerals, vitamin A and vitamin D and other elements needed by the human body.

Every 100 grams of edible part of grass carp contains 15.5-26.6 grams of protein, 1.4-8.9 grams of fat, 83-187 kcal of calories, 18-160 mg of calcium, 30-312 mg of phosphorus, 0.7-9.3 mg of iron, 0.03 mg of thiamine, 0.17 mg of riboflavin, and 2.2 mg of niacin.

Although grass carp and carp look similar in appearance, you can still find the difference between them if you observe carefully. If you carefully compare the appearance of grass carp and carp I introduced next time, you will find the difference between carp and grass carp. Both grass carp and carp have high nutritional value, but the nutrients contained in carp and grass carp are different, which of course means that the effects of carp and grass carp are different. Now everyone knows the difference between carp and grass carp.

Nutritional differences between grass carp and carp

grass carp

Grass carp is rich in unsaturated fatty acids, which is beneficial to blood circulation and is a good food for cardiovascular patients.

Grass carp is rich in selenium. Regular consumption has anti-aging and beauty-enhancing effects, and also has a certain preventive and therapeutic effect on tumors.

For people who are thin and have poor appetite, grass carp meat is tender and not greasy, and can stimulate the appetite and act as a tonic.

Carp is commonly known as carp crooked, hairy, etc., and belongs to the Cyprinidae family. The body is flattened and the abdomen is round. The mouth is horseshoe-shaped and there are two pairs of whiskers. The base of the dorsal fin is long, and both the dorsal fin and the anal fin have a thick and serrated hard spine. The sides of the body are golden yellow, and the lower lobe of the tail fin is orange-red.

carp

Carp protein not only has high content, but also high quality. The human body digestion and absorption rate can reach 96%. It also contains essential amino acids, minerals, vitamin A, vitamin D and other elements needed by the human body.

The fat in carp is mostly unsaturated fatty acids, which can reduce cholesterol to the maximum extent and prevent and treat arteriosclerosis and coronary heart disease. Therefore, eating more fish can help you live a healthy and long life.

Every 100 grams of carp food contains 17.6 grams of protein, 4.1 grams of fat, 25 micrograms of vitamin A, 0.09 grams of riboflavin, 2.7 milligrams of niacin, 1.27 milligrams of total vitamin E, 334 milligrams of potassium, 33 milligrams of magnesium, 2.08 milligrams of zinc, and 15.38 milligrams of selenium. The amino acid content is complete.

What is the difference between red grass carp and koi?

Grass goldfish originated in China. It belongs to the Cyprinidae family and is similar in shape to crucian carp. It is brightly colored, with a flat and slender body like a spindle. It has a normal dorsal fin and a forked tail fin with a single leaf. It has long and short tails. There are mainly single-tail grass goldfish and swallowtail grass goldfish. They are the original species of goldfish and are similar to the ancestor of goldfish, the golden crucian carp.

It is called "Comet" in Britain and the United States. The earliest discovery of golden crucian carp was around the Jin Dynasty (265-420). Other goldfish species evolved from it. Short-tailed crucian carp goldfish and wild crucian carp have the same streamlined body and single tail fin. They move quickly, are strong, and have high resistance and adaptability. They are the most ideal goldfish species for beginners in aquariums. They are omnivorous and easy to raise.

Varieties include: Gold Crucian Carp, Red and White Grass Goldfish, Five-Color Grass Goldfish, Long-Tail Grass Goldfish, Red and White Long-Tail Grass Goldfish, Five-Color Long-Tail Grass Goldfish, etc. The short-tailed ones are generally called Gold Crucian Carp; the body is spindle-shaped, the tail fin is not bifurcated, and the dorsal, ventral, pectoral and arm fins are all normal.

They are strong, adaptable, and easy to feed. In addition to red, they also have red and white, five-colored, black, and yellow colors. They are very sensitive to the landing of bait. Due to long-term domestication, they often swim on the water surface and can swim in a line when people clap their hands. If you feed them food, they will gather on the water surface to compete for food and play in the water, which is very interesting. They are suitable for raising in large ponds in parks, gardens, and natural waters.

The long-tailed ones are called long-tailed grass goldfish or red swallow-tail. Swallow-tail: short body and long tail, the tail is more than half of the body length, some species of tail fins are forked at the back and similar to the tail feathers of the house swallow, hence the name - swallow-tail. It has a lively temperament and is easy to raise.

It is a more advanced fish than the grass goldfish, and it is developed from the original type of double-tailed golden crucian carp that was exported overseas in ancient times. In terms of color, in addition to red and white and red and white colors, there are also glass flowers, colorful swallowtails and five-color, etc. The brocade crucian carp is a close relative of the crucian carp, and has the same color as the koi, so it is called the brocade crucian carp.

The body of the brocade crucian carp is flat and tall, with a body length 2.2-2.8 times its height, a round abdomen, a small head, a blunt snout, a terminal mouth, no whiskers, and flattened hypopharyngeal teeth. The dorsal and anal fins both have a thick hard spine with serrated posterior edges. Brocade crucian carp has strong adaptability and can grow and reproduce in all kinds of water bodies. It reaches sexual maturity at the age of one, and the population recovers quickly, so it has always been used as a breeding object. There are many breeding varieties of brocade crucian carp, all of which are variants of ordinary red brocade crucian carp that have been artificially selected and domesticated.

Additional answer: You can raise them together, but red grass carp is not as easy to raise as koi. Koi is a large and noble ornamental fish with red, white, yellow, black, blue, purple and other colors. It is increasingly loved by consumers for its gorgeous and crystal body color, graceful swimming posture, gorgeous and handsome stripes, and vigorous and heroic demeanor.

Introduction to Koi Breeding Technology

1. Environmental requirements.

Koi are highly adaptable to the environment, but cannot resist the rapid change of water temperature. When the temperature suddenly drops or rises by 2-3 degrees Celsius, they are prone to illness. If the temperature rises or falls by 7-8 degrees Celsius, the fish will crawl on the bottom of the water without eating or moving. If the temperature suddenly changes by a larger amplitude, the koi will even die immediately. The most suitable water temperature for koi is 20-25 degrees Celsius. In this water temperature, koi swim actively, have a strong appetite, are strong, and have bright colors.

Koi is suitable for living in a slightly alkaline, low hardness water environment, with spring water being the best, as it contains a variety of mineral elements and other ingredients that can increase the fish's pigmentation and make the koi's body color more vivid.

2. Breeding technology. The breeding age of koi is generally 3-8 years old and weighs more than 1.5 kg. Select fish with plump and round appearance, round head, long body, no deformity, bright color, uniform color, symmetrical appearance, no damage, and no disease as broodstock. From the appearance, the female fish has a short, thick and plump body, a swollen abdomen, and a rounded end of the pectoral fin.

The male fish has a slender body, with a slightly pointed pectoral fin. There are several white "stars" on the first fin ray of the pectoral fin and the gill cover. The breeding period of koi is similar to that of ordinary carp, generally in April and May each year. When the water temperature is stable above 16 degrees Celsius, the male and female koi can be selected in a ratio of 1:2 and put into the prepared pool. A sterilized fish nest is placed in the pool in advance to let them lay eggs on their own. After observing the completion of their spawning, the parent fish are caught and the fish nest is left in the pool for incubation. After 5-7 days, the fry are hatched and then cultivated.

3. Feeding and management. For viewing purposes, a cement pool can be built in the courtyard for feeding, with a depth of 0.

6-0.8 meters is appropriate. Single breeding is adopted, and the density can be slightly larger. 3-5 koi can be raised per square meter. The pool is equipped with water spray facilities or circulating micro-flow conditions. Generally, they are fed twice a day. They can be fed with color enhancement feed and growth feed specially used for ornamental fish to promote their color enhancement and form a perfect body shape. The daily feeding amount is 2%/FONT10% of the fish's body weight, and it takes 20-30 minutes to finish eating.

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