Question 1: The living habits of crabs in the sea They rely on their mother crabs to give birth to their young, and each time the mother crab lays a lot of eggs, which can amount to millions or more. After these eggs hatch in the abdomen of the mother crab, the larvae can be separated from the mother and float around with the coastal currents. After a few retreats, they grow into large-eyed larvae, which then grow into juvenile crabs after a few retreats, which are almost identical in appearance to adult crabs, and after a few more retreats, they become crabs. Most of the marine crabs are eggs that mature and are discharged directly into the ocean without hatching.

The hard shell of the crab protects the crab from predators, but the shell does not expand as the body grows. So the crab growth is intermittent, that is, after a period of time, the old shell molted body will continue to grow. The largest crab on earth is the spider crab, their feet spread out as wide as 3.7 meters, the smallest crab is the bean crab, less than half a centimeter in diameter.

Though small, crabs have all the essentials. After removing the crab's hard shell, we can find that the crab's body is protected by a layer of shell, these shield-like shells, which biologists call the dorsal armor (carapace). The body of the crab is symmetrical and can be divided into the frontal region, eye region, heart region, liver region, stomach region, intestinal region and gill region. The crab has appendages (appendages) attached to each side of the body. The appendages on the head are called antennae, which have tactile and olfactory functions, and some appendages have mouth functions, which are used to tear food and deliver it into the mouth.

The crab has five pairs of appendages in the thorax, called thoracic legs. A pair of appendages located in front of the strong-shaped chelipeds, can be used to forage for food, the remaining four pairs of appendages is the crab's feet, the crab walks to move to rely on these four pairs of appendages, they walk in a unique and interesting appearance, most of them are walking horizontally rather than straight ahead. The exception is the monk crab, which walks straight ahead.

Crabs spend most of their time searching for food, and they are not picky eaters; they will eat whatever their chela can get their hands on. Small fish and shrimp are their favorites, but some crabs eat seaweed and even dead animals or plants.

Crabs eat other animals, and other animals may also eat crabs, for example, humans eat crabs as a delicacy. There are also water birds that eat crabs! Some fish love to eat crab legs as much as humans do. When young, immature crabs swim in schools in the sea, they may be eaten by other sea creatures, which is why crabs lay so many eggs when they spawn.

The fiddler crab is a common crab on the beach, why is it called the fiddler crab? Because these crabs wave their large chelae as if they were waving at the tide, the name "Chaochao" comes from this. In addition, the male fiddler crab's huge chela looks like a violin, so it is also known as the fiddler crab or the pianist crab.

Question 2: how to store sea crabs Baidu said 1. If it is dead buy back immediately throw frozen wait until you want to eat the day and then take out cooking

If it is live put in the bucket covered with a cloth do not touch him

Do not put the water like the weather now, as that put a two or three days is not a problem 2. If it is dead seawater soak with the crabs frozen, or frozen! It's not a good idea to use mineral water. Do not use mineral water, it is best to get some seawater back.

3. If it is alive Choose vigorous crabs, tie up the feet of the crabs to reduce the physical consumption of the crabs, and then placed in the freezer, the temperature is maintained at 5 degrees -10 degrees, covered with a wet towel can be preserved. Pick the less energetic ones to eat first, and keep the energetic ones for further preservation. The way to distinguish between them is: touch the eyes of the crab with your hand, and eat them first if they are not responsive

Finally, I would like to say that if I were, I would choose to eat all of them! Also save your sister ah!!! You say, I say go to your home to eat ah, or you send me ah ~ ~ ~ ~

Question 3: What are the varieties of sea crabs varieties are: flower cover crab, red clip red, flying crab these three

Question 4: How to raise the sea crabs to live 1, before feeding

First feeding, please use the salt water for them to dip a 1-2 minutes of seawater bath, to remove parasites or lice-like organisms, and Set up a water bowl, shelter and bottom sand with 1-2 teaspoons of calcium salt on the sand (they will take up the salt directly from the sand). New crabs usually burrow into the sand for a few days to a few weeks to adapt to the new environment, they may not be very active or not eating at this time, wait for them to get familiar with the sand in your house, don't put them on your hand at this time to minimize disturbing it, put them in some darker and quieter place, maintain the food changed every day and the proper temperature and humidity.

2. Sunlight, ventilation, and hidden objects

Try to find a location close to a window or a place where the sunlight can shine diagonally. However, it is not necessary for the tank to be exposed to direct sunlight. Put the tank in a lower place, the highest edge of the tank is right at the bottom edge of the window. The layout should be more sheltered, especially in a hut, to match their habits. Jumbo crabs are very timid and a hut can make them feel safe, and they themselves are very fond of resting inside during the day.

3. Terrarium

A terrarium provides a comfortable environment for the crabs to live in and can be made of plastic or glass. Plastic box with a lid and a certain height to prevent escape, the lid has a hole, there is proper ventilation, plus the lid can be closed tightly, can be heat preservation and moisturizing.

4. Space

The rearing tank should be lined with bottom sand so that they can have a suitable place to hide and shed their shells. The depth of bottom sand in the tank should be at least 1 to 2 times the height of the body in the tank (at least 5-7cm), and the coarseness of the sand should be about 2-3mm, if the sand is too young it will be ingested into the shells, and if the sand is too coarse it will make them not be able to return to the surface of the sand after they molt. There should be space for a shelter and a water bowl, and enough space for them to walk around. If you want to make more space in the tank, you can put some climbers or driftwood in the tank for them to climb.

5. Different Size Individuals

If you keep both large and small individuals in the same tank, you should be careful to see if the large individual will attack the small one, if this happens, please keep them separately.

6. Backup tanks

If you have too many land crabs (more than 6 crabs in a tank), you should prepare 1-2 backup tanks as a refuge for the moulting crabs. For example, when an individual is found to be showing signs of molting, they can be placed in another tank. Alternatively, the reserve tank can be used as a treatment room for individuals that are sick or stressed and cut themselves.

7. Cleaning

Cleaning detergents are very toxic to Lugleneck crabs, so never use detergent, lye, or other cleaning agents when cleaning the tank. In summer, bacteria can breed easily, so you can clean it more frequently, but in winter, you don't need to clean it that frequently. On average, clean the tank once every 2-3 months. If you notice any odor or insects, you should clean the breeding tank as soon as possible. Before cleaning, you should pay attention to whether there is any individual of Jumbo Crab missing in the tank. If any individual is missing, it means that an individual is hiding in the sand and may be about to molt, so you should stop cleaning the tank. Prepare a plastic tank and let the crabs soak in warm water with calcium salt, the depth of water is the same height of the shell. When bathing, we put the conch shell mouth side up, put them into the water, let them walk in the water for 1~2 minutes and then pick them up.

8. Temperature and humidity

Since the crab lives in subtropical areas, the temperature should be maintained at 20-30 degrees Celsius, and when it is at 15 degrees Celsius, it will start to move slowly, and it will die if it is below 10 degrees Celsius. You can use heat blankets or UV lamps to keep the tank at 26-30 degrees Celsius. Since the crab uses gills to breathe, they cannot breathe when the humidity is low, please maintain the humidity at 60-80%, and use water with calcium salt (not tap water with chlorine) to spray manually 2-3 times a day in the morning and in the evening.

9. Food

The crab is nocturnal, so it is best to feed it at night after 10 o'clock. Change the food every day. The crab will usually use its front claws to find organic matter in the sand, which can be fed with rice, breadcrumbs, eggs, fruits and vegetables, fish feed, etc. The crab will also feed on corn and popcorn. It also has a special fondness for corn and popcorn. If after molting you can give them more calcium and protein foods such as meat, fish, eggshells, cooked shrimp (with shells) and other foods.

Do not give them onions, food containing mustard, spicy food, processed food with preservatives or additives, sugar, food containing a lot of oily food, food containing the effect of insect prevention, vegetables and plants containing insecticidal effect.

10. Drinking water

Available mineral water ...... >>

Question 5: How to preserve sea crabs If they are dead, buy them back immediately and throw them into the freezer until the day you want to eat them and then take them out to cook them

If they are alive, put them in a bucket, cover them with a cloth and don't touch them

Don't put them in the water, as in the current weather, so that it will be okay to put them in for two or three days

(Coastal regions.) The best way to preserve them is to put them in the bucket, cover them with cloth, and not touch them

The best way to preserve them is to put them in the bucket.

Question six: China's most prolific sea shrimp, sea crab breeding place is there Many areas along the coast are farmed, but the varieties will be different.

Question 7: What is the name of the crab on this picture, where is the origin of the life in the sea or the river, how big can grow?

These crabs are mainly produced in the sea water of Vietnam, and they can't grow up to be big, usually less than two taels, and they are mainly used to make spicy crabs.

Question 8: What is the lowest degree at which sea crabs can live? Letting live crabs hibernate is the best way to keep them alive for a longer period of time.

Its body operation is as follows;

1, put your share of crabs in a bucket, first of all, those eager to climb out of the bucket of crabs, one by one, take out, with like a leather band or rope will be tied.

2, refrigerator temperature to zero on five degrees or so, the refrigerator under the preservation box out, will not be used at home towel drenched into the transparent show laying on the bottom, and then put the tie good crab on the top of the apparent towel, placed in the refrigerator can be.

Note; with this method of preserving live fresh survival time is the longest, if handled well according to my experience one or two months are not much of a problem, but must be three or two days to see if it is not in the spit bubbles, but also appropriate sprinkle some water, pay attention to the water can not put more. As the crab can not move, rarely consume the body nutrients, good quality after taking out can still be used for steaming and other dishes.

For those who can not climb, but still live can be frozen, but that is not live fresh, but frozen fresh, cooking flavor to be slightly worse than the former, but do other dishes are also good.

Problem nine: sea crab which crowd is not easy to eat Autumn wind, crab fat, the annual crab season has come. But the delicious crab is not suitable for everyone to enjoy. Experts reminded that five types of people should be cautious in the face of "horizontal gentleman". Crab belongs to the highly sensitive food, that is, the folk said "hair". For some allergic people, crab meat through the intestinal wall into the human body circulation, will induce and exacerbate the body's allergic reaction, causing gastrointestinal smooth muscle spasms, angioedema, skin rashes, asthma, and in severe cases, can cause anaphylactic shock. The following five groups of people must be careful when eating crab: eating crab with a history of allergy or urticaria, allergic asthma, atopic dermatitis, especially allergic children, the elderly, pregnant women, it is best not to eat crab; cholecystitis, cholelithiasis, hepatitis, acute and chronic pancreatitis and serious cardiovascular and cerebrovascular disease patients, as little as possible to eat or not to eat the crab, and more can not be wine with the crab to open up the drink, in order not to aggravate the condition or cause the above mentioned Acute attack of the disease; diarrhea, stomach pain, cold, fever or cold spleen and stomach people should not eat crab, because the crab is cold food, protein, fat content is high, should not be digested and absorbed, and at the same time will exacerbate the discomfort of the spleen and stomach, abdominal pain, diarrhea, vomiting and other symptoms; cold and weak pregnant women are not suitable for eating crab, otherwise it may lead to miscarriage; infants and young children should not eat crabs because of the high protein will aggravate the burden on the liver and kidneys.