What kind of benefits does fish, shrimp and crab bring to you?

Hello, glad to answer for you;

There are two places on the Internet. The first is on the phone. The second is in.

Our computer is above the place.

There are two main differences between the two:

1. Different genera: shrimp is an arthropod that lives in water, belonging to arthropod crustaceans; Crab (scientific name: crab) is a crustacean of the order Decapoda Brachytail, especially the species of the Brachytail family.

2. Different living ranges: all kinds of shrimp must live in waters (freshwater, ocean), most crabs are seaborn, and tropical shallow sea species are the most. However, there are still a few crabs, such as ground crabs, that can adapt to life on land, live in damp mud holes, and migrate to the sea during the breeding season.

Shrimp and crabs both belong to the crustacean class. These animals are closely related to humans and some are the main aquaculture or fishing targets, especially shrimp, lobsters and crabs.

The output of shrimp and crab in China's marine fishery catches is quite large, especially shrimp, hairy shrimp, pike crab, etc., which are rich in nutrition, high output value, and more important status. There are many kinds of shrimp and crabs in China, through a large number of investigations and studies, there are about 1,000 kinds of shrimp that have been discovered, including more than 400 kinds of shrimp and more than 600 kinds of crabs.

Shrimp and crabs are invertebrates, belonging to the decapods of the class Crustacea of the phylum Arthropods, most of the species are seafood, there are not many species distributed in freshwater, shrimp and crabs are wrapped in a layer of carapace, the carapace of shrimp is soft and tough, and the carapace of crab is hard and brittle. Shrimp and crab are delicacies on people's tables, and both of them belong to the class Crustacea. China's shrimp and crab resources are abundant, and the shrimp is hairy shrimp.

Prawns, giant river prawns, crabs such as pike crabs, blue crabs, river crabs, etc. are all familiar nutritious foods.

They can't be kept together because of the food connection of crabs eating fish and fish eating shrimp.

Generally small space and small waters, it is not possible to polyculture, from your point of view, you are also an aquatic animal lover, want to create a more bionic natural environment, but if you want to polyculture, you must have a relatively large space and water. For example, in the case that the above creatures are not too big, at least 5 square meters of cement pool are required. But there are some problems with doing so:

1. Shrimp and crabs have parasites, such as leeches, which will be transmitted to other organisms, which is dangerous to turtles.

2. The bionic environment needs to have sand and stones, rockeries, sunken trees, aquatic plants, etc., and if there is a slight discomfort, some species will die, and then there will be infectious diseases.

Fish will eat shrimp.

Raised together, the fish will eat up the shrimp.

Follow the food chain: crabs eat small fish, which affects fish reproduction. Fish eating shrimp will cause the shrimp to be left or eaten up.

They can't be kept together because of the food connection of crabs eating fish and fish eating shrimp. Hehe.

Pay attention to hygiene, and be hygienic.

In the dermis of shrimp and crab carapace, there are various pigment cells, but most of them are blue-black, in these pigment cells, there is a pigment called astaxanthin, usually it is mixed with other pigments, can not show the bright red color, but after boiling, other pigments are destroyed and decomposed, but it is not afraid of high temperature, so the carapace of shrimp and crab will show the red of astaxanthin. However, in the dermis of shrimp and crab carapace, the distribution of astaxanthin is uneven. Therefore, you will find that shrimp and crabs are not red all over the body after cooking, and in places where astaxanthin is more distributed, such as the back part, it will appear extra red, while in places with less astaxanthin, such as the lower part of the crab legs, the red will be lighter.

Since the abdomen of a crab does not have astaxanthin at all, no matter how many times it is steamed, it will never turn red.

A shrimp is a shrimp, and a crab is a crab.

Two old watches, just like black and white impermanence, bull head and horse face.

The significance of shrimp and crab farming:

1. It can provide high-quality animal protein food for humans economically. In animal feeding, fish are aquatic ectothermic animals, which consume less energy than terrestrial thermostatic livestock and poultry, have high feed conversion efficiency, and high animal protein content in products.

2. It can provide raw materials for industry, and is an important raw material for pharmaceutical industry, chemical industry, feed industry, etc.

3. It plays a significant role in making up for the shortage of marine fishing. With the rapid growth of the world's population and economic development, the demand for animal protein is increasing day by day, but the catch is limited by the renewal of natural fishery resources. Fisheries** points out that the trend of increasing annual catches has reached its peak and that in the future it will not be possible to meet demand by fishing natural fishery resources alone.

4. It is conducive to maintaining ecological balance. In offshore areas, the increase in aquaculture production can reduce the fishing intensity and prevent overfishing from causing ecological imbalance. In inland waters, aquaculture is combined with some other agricultural production, contributing to a virtuous ecological cycle.

5. It is conducive to promoting economic development, expanding the industrial chain, doing a good job in the multi-channel development of breeding, fresh food and processing, and increasing the output value.

Nutritional analysis of shrimp.

1.Shrimp is rich in nutrients, and its flesh is soft and easy to digest, making it an excellent food for people who are weak and need to recuperate after illness. 2.

Shrimp is rich in magnesium, magnesium has an important role in regulating heart activity, can protect the cardiovascular system, it can reduce blood cholesterol content, prevent arteriosclerosis, and at the same time can dilate coronary arteries, which is conducive to preventing hypertension and myocardial infarction. 3.Shrimp has a strong lactation effect, and is rich in phosphorus and calcium, especially for children and pregnant women.

4.Scientists at Osaka University in Japan recently discovered that astaxanthin in shrimp helps eliminate "jet lag" caused by jet lag. Crabs are rich in protein and trace elements, which have a good tonic effect on the body.

Crabs also have anti-tuberculosis effects, and eating crabs is very beneficial to tuberculosis.

Crabs are cold foods, and they are delicious, but compared to the nutrients, shrimp is higher, preferably wild shrimp.

The crab is too cold, the shrimp is better, as the saying goes, those with feet are not as good as those without feet.

They are brothers with high cholesterol but I am still crab roe.