Depending on the method of preservation, it will take at least two or three days and at most ten days for the crabs to stay alive.

1, room temperature preservation

If the room temperature can be maintained between 15 degrees and 25 degrees, it is perfectly possible to store the crabs at room temperature. You only need to put the crabs into larger pots, and then regularly spray them with some water to maintain humidity, so you can also save the crabs for 3-5 days, and it is very convenient to take them as you eat.

2, water breeding

You can also put the uneaten crabs into a bucket, the bucket is deeper, and the dead surface is smooth, which can prevent the crabs from climbing out. Then we pour a little water in the bucket, pay attention to the water must not put too much, never over the crab, otherwise the oxygen in the water depleted, will smother the crab. Only need to add a little water to ensure that the humidity of the crab can be. Then put some sesame seeds, crushed eggs and other food, so that the crabs can be raised for 5-10 days, and can be eaten at any time when they are caught, which is very fresh.

3, refrigerator

The last method is to tie up the legs of the crab with a rope and then put it into the refrigerator, and then cover the crab with a wet towel for preservation, so that you can also save the crab for 2-3 days without dying. The purpose of tying up the legs is to reduce the physical exertion of the crabs and prolong their life; while covering the wet towel is to maintain the humidity of the crabs, which must not be less.

Tips to identify crab freshness

1, pick up the crab and touch its eyes with your hand to see if it blinks, and blinking indicates freshness.

2. Put the crab into the water and see if the crab's mouth spits out bubbles, which indicates freshness. Be careful not to put the bundled crab into the water for a long time, because the water is not enough oxygen, the crab will be suffocated and die soon.

3. Touch the claws. Straighten the smallest claw of the crab and see if it bends quickly and naturally, if it does, the crab is alive.

4, untie the bundled crab, see whether the crab will crawl on the ground, can crawl means that the crab is very energetic.