What does a freshly dead crab look like, and what does a dead crab look like when cooked?

There are several ways to identify a dead crab:

1. The carapace of the back of the live crab is blue-gray, shiny, the abdomen is white, the golden claws are thickly covered with yellow hair, the color is bright, the umbilicus is rounded, and the outward convex, while the back of the dead crab is dark red after cooking, and the abdomen is gray-white, which can be identified at a glance.

Second, the shell of the dead crab is relatively soft, the muscles of the whole body are relaxed, and the limbs and chelae naturally droop when they are picked up, and there is no muscle tension.

3. There are always some bubbles in the mouth of the live crab, and a slight bubble bursting sound can be heard, and the dead crab basically does not move.

Generally, dead crabs are dark red on the back and grayish on the belly when cooked.

1. The color of the difference: Generally, the back of the dead crab is dark red and the abdomen is gray and white after cooking, while the fresh one is bright red and the abdomen is bright white.

2. The taste of difference: After the dead crab is cooked, most of them will have a smell different from the fishy smell of the sea, while the live crab will not have it after cooking.

3. The hardness of the shell of the difference: the shell of the live crab is very hard after cooking, and it will not be concave when pressed by hand, and the shell of the dead crab is relatively soft, and it can be pressed down with a press by hand.

There are two possibilities that frozen crabs are fishy.

1. The crab was not cleaned before freezing, and some of the ingredients with a fishy smell on the surface were not removed, so there will be a fishy smell after freezing, and the taste will be heavier after thawing.

2. Frozen crabs generally do not deteriorate in the process of freezing, but the quality of frozen crabs will be related to the quality of crabs before freezing, so crabs that deteriorate and have a fishy smell before freezing will also have a fishy smell after freezing.

After the dead crab is cooked, most of them will have a foul smell that is different from the smell of the sea, and the shell of the dead crab is relatively soft, and you can press it down with your hand.

There are many reasons why your crab dies, it may be that it is fed too much food to die, or it may be caused by too much breeding density and lack of oxygen, and the most important point is that the water quality is not changed often, or it is infected with a certain virus and germ, this kind of death will occur.

Crab is a kind of aquatic product that is very afraid of lack of oxygen, so crabs must always inject oxygen and air into the water, so that crabs will not die because of lack of oxygen, if the crab dies, don't eat it, dead crabs have a lot of germs and bacteria, and they are easy to get sick after eating.

If it is a freshwater crab, it is best to keep it for a few months and it will not die.

I have raised experienced ones, and the causes of death are: 1. The water temperature is too high, 2. There is too much water, the crabs cannot breathe, 3. The number of nutrients is too much.

Maybe you put too much water, don't put too much water, it's better to put some stones so that it can come up and breathe)

Your crabs are dead because you don't know how to raise crabs, crabs generally die after a few days at home, and if you don't know how to raise crabs, it's easy to raise crabs to death.

Crabs are generally wild and difficult to keep at home, because if the water temperature or food is not enough, then the crabs will also die, as well as bacterial infections or diseases.

The mother crab gives birth to a baby crab and does not die. Each time, the female crab lays a large number of eggs, which can reach more than one million. After these eggs hatch in the belly of the mother crab, the larvae can break away from the mother and float around with the coastal currents.

After several shells, they grow into big-eyed larvae, and the big-eyed larvae grow into juvenile crabs after several shells, and the appearance of juvenile crabs is almost the same as that of adult crabs, and then after several shells, they become crabs. Most marine crabs are released into the ocean without hatching after their eggs have matured.

Because the little crabs are made into crab sauce.

There are three ways to identify:

1. Touch your eyes.

Live hairy crabs shrink when they touch their eyes with their hands, while dead crabs usually bulge out of their eyes and do not move.

2. See if you spit bubbles.

If the live hairy crab is more energetic, it will spit out a circle of small white bubbles, while the crab with bad spirit may not have this characteristic, and this method must be observed to distinguish the dead and alive characteristics of the hairy crab.

3. Untie the rope to see the state.

If there is no response after touching the eyes, you can untie the rope tied to the crab and put it on the table to see if it can still crawl or retract its paws, if not, it means that it is dead and must be discarded.

Hello, you won't eat the crab even if it just died.

The true death and fake death of crabs can be distinguished from five aspects: looking at the eyes, spitting bubbles, smelling the smell, looking at the crab claws, and untying the rope.

1. Look at your eyes.

Touch its eyes with your hand, the eyes of the crab that is feigned dead will shrink, while the eyes of the crab that is really dead will not move, and this method of judgment is also more accurate.

2. Spit bubbles.

Put the crab in half a basin of water, and the crab that will spit bubbles indicates that it is faked death, and the crab that does not react is really dead.

3. Smell the smell.

Fake dead crabs will smell fishy with aquatic plants, while real dead crabs will smell a little bad because they have begun to decompose and rot.

4. Look at the crab claws.

If it quickly returns to its natural bending state, it means that the crab is faked, and vice versa.

5. Untie the rope.

Put the crab at room temperature, and untie the rope, wait for a while to see if it can crawl, the fake dead will generally move, and the real dead will not move.

How to preserve crabs.

1. If you want to preserve crabs for a short period of time, you must choose fresh crabs, and the stronger the vitality, the better the preservation.

2. If the crab is preserved by hydroponics, the amount of water is the key, don't add too much water, otherwise the crab will easily die of lack of oxygen.

3. Do not scrub the crabs that need to be preserved, so as not to cause crab damage. Also, it's better to tie the crab legs well, which can reduce the frequency of the crab's activity, which reduces energy expenditure.

4. The longer the fresh crab is preserved, the thinner it will be, and the taste will be bad. Therefore, it is recommended to eat it all within a day.