1, crabs can live in water, but don't put too much water. Don't drown the crab, just about half, so as to give it enough oxygen. As for how much water to put, it can't be materialized and can't exceed the shell surface of crabs. Because each crab container is different, the specific amount of water will be different. Raising crabs is not so rigid. The specific situation is analyzed in detail, and the actual situation shall prevail. Generally speaking, as long as the water level does not exceed the shell surface of crabs, there is basically no problem.

There are generally two kinds of crabs, one is sea crabs, and the other is freshwater crabs, that is, river crabs. Because of its delicious taste and rich taste, it is deeply loved by many people. Crabs have high nutritional value. It is rich in protein, fat and calcium compounds, especially protein and fat. Its nutrients are several times that of ordinary fish and pork, and some trace elements contained in it can promote the development of the brain, thus enhancing memory. Eating a proper amount of crabs for a long time can supplement a variety of trace elements needed by the human body, and also enhance the body's resistance and make the body healthier.

Crab itself is cold, so it is very harmful to people with weak body and cold stomach. If these people eat a lot of crabs, it will lead to poor health and serious coma. Not only the above-mentioned people, but also pregnant women should not eat too many crabs, because some will cause great harm to the baby, which will lead to miscarriage in serious cases.