CATDOLL : CATDOLL: When do crabs come out to feed?

When do crabs come out to feed?

River crabs have the habit of hiding in the day and coming out at night. Generally, they hide in caves during the day and come out of caves at night to look for food. On land, river crabs do not eat much, and often drag food on the shore to underwater or caves before eating.

Crabs spend most of their time looking for food. They are generally not picky eaters and will eat anything they can get their claws on.

Most species of crabs live in the sea or near the coast, and some live in fresh water or on land. They rely on female crabs to give birth to baby crabs, and each time the female crab will lay a lot of eggs, the number can reach millions or more. Crabs rely on the geomagnetic field to determine the direction. The number of genetic materials of this type of organisms is complex and has great differences, often up to more than 100 pairs.

Additional information

River crabs are omnivorous animals that eat both meat and vegetables, and prefer animal feed, such as clams, snails, small fish and shrimps. Generally, from May to August each year, it is advisable to put live snails in the crab pond, about 200 kilograms per mu, for river crabs to eat. In addition, during high temperature periods, the proportion of plant bait should be appropriately increased, such as some duckweed and water plants that river crabs like to eat.

When raising crabs in ponds, feed is usually given once a day in the evening to adapt to the habit of river crabs of hiding during the day and coming out at night. When feeding, the feed should be fed 1 to 2 meters away from the shore. The amount of feed should be increased or decreased accordingly according to the water temperature and weather of the day and the feeding situation of the river crabs after the pure bait was given the day before. It is best to eat it all in the evening of the same day.

Reference source: Baidu Encyclopedia - Crab

River crabs have the habit of hiding in the day and coming out at night. Generally, they hide in caves during the day and come out of caves at night to look for food. On land, river crabs do not eat much, and often drag food on the shore to underwater or caves before eating.

River crabs do not eat during the year except for staying in low temperature and not eating. Even in winter, they will eat as usual. When the water quality is good, the water temperature is suitable, and the bait is abundant, river crabs have a large appetite and can continuously prey on several snails in a day and night. Soft-shell crabs that have just molted and have broken limbs are also often attacked. However, river crabs have a strong ability to endure hunger. They will not starve to death even if they fast for 10 days or even half a month.

Additional information

Tips for buying crabs

look

The carapace of a good quality crab is glossy grey, the abdomen is white, the claws are covered with yellow hair, the color is bright, the navel is round and convex, the limbs are firmly connected and curved, the crab is large and strong, and if the back is yellow, the meat is thin. In addition, if the crab is active and crawling around, it is a good and strong crab.

Weigh

For crabs that meet the requirements in appearance, you should weigh them one by one with your hands. The heavier ones are fat. This method is not suitable for river crabs and live sea crabs, because these crabs are often tied up.

peel

Peel off the navel of the crab. If there is plenty of crab roe inside the shell, which is neat and condensed, then this is a good crab.

pull

If you buy dead crabs, you should check the crab legs. If they are intact and there is a slight elasticity when you gently pull them, it means they are fresh crabs. If they are not fresh crabs, not only will there be no elasticity when you gently pull them, but they will also break off easily.

smell

If you smell a fishy odor from the crab, it means that the crab has gone bad and cannot be eaten. Eating rotten crabs can easily cause food poisoning.

Reference source: Baidu Encyclopedia: Crab

River crabs usually hide and slide in caves during the day and come out of caves to look for food at night. On land, river crabs do not eat much, and often drag food on the shore to underwater or caves before eating. Except for the low temperature that makes the river crabs temporarily stop eating, they still eat as usual even when migrating in winter. When the water quality is good, the water temperature is suitable, and the bait is abundant, river crabs have a large appetite and can continuously prey on several snails in a day and night. Soft-shell crabs that have just molted and those with limbs are often attacked. However, river crabs have a strong ability to endure hunger. They will not starve to death even if they fast for 10 days or even half a month.

River crabs usually hide in caves during the day and come out of caves to look for food at night. On land, river crabs do not eat much, and often drag food on the shore to underwater or the side of caves before eating. River crabs do not eat during the year except for staying in low temperature and not eating temporarily. Even in winter, they still eat as usual. When the water quality is good, the water temperature is suitable, and the bait is abundant, river crabs have a large appetite and can continuously prey on several snails day and night. Soft-shell crabs that have just molted and individuals with limbs are often attacked. However, river crabs have a strong ability to endure hunger. They will not starve to death even if they do not eat for 10 days or even half a month. Under artificial breeding conditions, according to the growth and development needs of river crabs, the "fine-coarse-fine" structure of the bait fed is beneficial to the growth of river crabs.

Except for hibernation in winter, it seems that they have to look for food.

Can crabs be caught during the day? When is the best time?

1. Crabs can be caught during the day, and the best time is in the evening when the tide is low.

2. How to catch crabs:

1. The method of luring with foxtail grass. This method is my own creation and is simple to do. Apply some sesame oil on the foxtail grass and shake it back and forth in the hole. As long as the crabs smell the scent, they will follow it. Use pliers to clamp the foxtail grass and pull it suddenly to pull the crabs out of the hole.

Of course, this method works best on small crabs, as larger crabs are more clever and difficult to hook.

2. Block the crab cave. Crabs are aerobic animals and will surface to breathe every once in a while. Therefore, after finding the crab cave, just block the cave entrance with grass balls or other things. When the air in the cave is consumed, the crab will automatically crawl to the cave entrance. After an hour, you just need to go to the cave, remove the grass balls, and you can catch the crab directly.

3. Fish with a crab net. The crab net is easy to make and can be made with window screen. The main thing to pay attention to is the choice of bait, and it is best to use snake meat. After putting the crab net in the bottom of the water, wait for about half an hour, so that you can lift the net.

4. Light capture method. This method is very simple and very effective. Because crabs like bright light at night, as long as the light is placed high on the shore, the crabs will crawl over to the light. It is very easy to catch them one by one.

5. Catch crabs with bare hands at night. Because most crabs come out at night to look for food, so at night, as long as you go to the river or ditch, you can hear the sound of "pu pu pu", which is the crab spitting bubbles.

Find the location of the sound, shine a flashlight, and you can be sure that there is a crab there. Just catch it with your hands.

6. Digging a hole. This method does not require any technical skills. You just need to dig the crab hole. Of course, you should also pay attention to another issue, which is how to identify the crab hole. Generally speaking, the crab hole is flat, and earthworm-like claw marks can be seen at the hole entrance.

7. Catching crabs with a scoop net. This method is mainly suitable for relatively wide water surfaces. Use a scoop net to block the water surface, and then several people pull it forward. After a distance, collect the net and go ashore to catch the crabs that enter the net.

1. Crabs can be caught during the day, and the best time to catch them is in the evening when the tide is low.

2. How to catch crabs:

1. Catching crabs with crab traps

The structure of the crab trap is to use thin bamboo poles or thick reeds to weave foil. In favorable areas of rivers, ports and lakes with water flow, the trap is set up in a pre-planned formation with piles. The lower end of the trap is inserted into the underwater sail, and the upper end is above the water surface. The entire trap is regularly curved. Some drum-shaped crab baskets are hung on the upper end of the trap. The bottom of the basket has an entrance for river crabs and funnel-shaped inverted whiskers. The upper part is covered, and the middle is where the river crabs gather.

2. Crab trawling

The crab trawl consists of a rectangular net with a folded net bag and a shallow bag net. The crab trawl is driven by a single boat. On one side of the boat, a bamboo net is extended from the bow and stern, and 8 to 12 nets are tied. At this time, the river crabs rush into the net through the net mouth. After entering the net, some river crabs crawl forward along the back of the net, encounter the blocking net, and fold into the side net. The other part stays in the net bag. Every 1 hour, the net is lifted once and moved to another place. At the same time, the river crabs can be poured out from the net bag and the net bag.

Additional information:

Crab habits:

Most species of crabs live in the sea or near the coast, and some live in fresh water or on land. They rely on female crabs to give birth to baby crabs. Each time, female crabs will lay a lot of eggs, the number of which can reach more than millions. Crabs rely on the geomagnetic field to determine direction.

How to eat crab:

You can't eat dead crabs, but what if you buy too many at one time and can't eat them all?

1. Place it in the refrigerator with a wet towel and cover it for a few days. Touch the crab's eyes with your hand. If there is no reaction, it is a dead crab.

2. Raise crabs in buckets of water.

3. Pregnant women cannot eat crabs, and should not eat crabs during the entire pregnancy period.

Source: Baidu Encyclopedia - Crab

Crabs can be caught at any time. The only difference is that they come out at night, but hide under rocks during the day, so you have to turn over the rocks to find them.