How to tell if a crab is alive and how to identify a live crab

How to tell if a crab is alive: touch the eyes, touch the crab legs, and spit bubbles.

1. Touch your eyes

Although the crab is tied with a rope and cannot move, its eyes can prove that it is dead or alive, so you can judge it by touching the crab's eyeballs with your hand. If it is a live crab, when it touches its eyeball, the crab will blink its eyes and retract its eyeballs, and if it notices that the eyeballs are moving, it means that it is a live crab.

But if you touch your eyes with your hand and there is no movement or reaction, it means that such a crab must be dead, or it is almost in a state of death, so such a crab cannot be chosen.

2. Touch the crab legs

Although the crab is tied, the bottom leg can be gently pulled out, so if you want to judge whether the crab is alive, you can turn the crab around, and then pull the bottom leg out to take a look. If it is a live crab, then after pulling the crab leg apart, it will immediately bend and shake, such a crab means that it is alive, if the crab leg is pulled away, it is found that the crab leg is straight and straight, it will not bend at all, and it will not move, then it means that such a crab is dead and cannot be purchased. Therefore, by observing whether the crab legs will bend and move, you can judge whether the crab is dead or alive.

3. Whether it will spit foam

Generally, if the crab is tied, if it is alive, it will spit bubbles in the mouth when there is no water. Of course, if there is no bubble spitting, you can also put it in the water, let the water cover the crab's body, if the crab is alive, it will definitely spit bubbles when it encounters water, and if there is no reaction to the crab that does not spit bubbles, it means that it is dead.

1. Touch the eyes: touch the eyes of the crab with your hands, if the reaction is not sensitive, it will die.

2. The degree of connection between the limb and the body: the fresh crab foot is closely connected with the body, and the foot is not loose and drooping when the crab body is lifted. Stale crabs will obviously show relaxation at the rotational place where the limbs and body meet, and the limbs (feet) can be seen to hang down when the crab body is lifted by hand.

3. Look at the "stomach print" above the abdominal navel: crabs mostly feed on humus, and after a period of time after death, the stomach contents of stale crabs will be corrupted, and black marks appear above the umbilicus on the ventral surface of the crab body.

4. Look at the gills: the gills of fresh crabs are clean, the gills are clear, white or slightly yellowish-brown. The gill filaments of stale crabs begin to decay and bond, but they need to be peeled off to observe.

5. Abdomen facing the sky: Turn the crab over, the abdomen is facing the sky, and it can be quickly turned back with the stinging foot, which is vigorous and can be saved. Those that can't be turned back have poor vitality and are not stored for a long time.

Here's how to tell if a crab is alive:

1. Touch your eyes first: Live hairy crabs shrink when they touch their eyes with their hands, while dead hairy crabs usually open their eyes wide.

2. Look again to see if you spit bubbles: If the live hairy crabs are more energetic, they will spit out small white bubble rings. Crabs that are in poor spirits may not have this feature. This method requires more observation to distinguish the life and death characteristics of hairy crabs.

3. Finally, untie the rope to see the state: If there is still no response after touching the eyes, you can untie the rope tied to the crab and then place it on the table to see if it can crawl or its feet can stretch. If there is no such feature, it means that the feature is no longer valid and must be discarded.

Crabs

Crab (Latin scientific name: brachyura, English name: crab), also known as crab, is a mollusc of the phylum Arthropod.

The genetic material of such organisms is complex and highly varied, often as many as 100 friends. Common crabs include hairy crabs (river crabs, hairy crabs, clear water crabs), pike crabs, etc. The resources of Chinese crabs are very abundant, among which the hairy crabs produced by Gucheng Lake hairy crabs, Taihu Lake hairy crabs, Gaoyou Haozhida Lake hairy crabs, Yangcheng Lake hairy crabs, Xilou hairy crabs, Xinghua hairy crabs and Hongze Lake hairy crabs in the lower reaches of the Yangtze River are the top quality.

First, look: look at the color, the color of the dead crab is dull, the fresh crab is bright red on the back after cooking, and the abdomen is bright white, while the back of the dead crab is dark red, the abdomen is gray and gray;

Second, smell: dead crabs have a rotten taste, live crabs are fresh seafood after cooking, the crabs themselves are very smelly should be the inherent fishy smell of seafood, and they don't feel stinky when they get used to it, and dead crabs have a particularly pungent smell after their meat is cooked, which is different from the rancid smell of spoiled food; Wisdom Raid.

Three, pinch: the dead crab is very soft after cooking, the live crab is cooked and the shell is hard, and the shell will not be concave when pressed by hand, and the dead crab has begun to rot, so the chitin is soft, and it will be concave when pressed by hand.