What are the natural enemies of crabs? What is the black paste inside crabs?

Crabs are rich in protein and mineral elements. When eating crabs, you should not drink tea or eat persimmons. Crab roe is rich in trace elements, collagen, calcium, phosphorus and other essential nutrients for the human body, and contains high levels of oil and cholesterol. It is known as the "gold of the sea". Today we will learn about the natural enemies of crabs.

Contents of this article

1. Crab’s natural enemies

2. What is the black paste in crabs?

3. Do male crabs have crab roe?

Crab's natural enemy

Water birds, carnivorous fish, and large marine creatures, such as egrets, plovers, gobies, squids, crab-eating foxes, etc. The plovers are a type of water bird that live near the beach all year round. Crabs are the favorite of sand plovers. Cuttlefish will inject venom into crabs to paralyze them. The goby is a carnivorous fish that looks very similar to a catfish.

The crab-eating fox lives in South America. Its main food is crab meat. It occasionally eats some fruits, birds, insects, lizards, etc. It has a very wide diet.

Crabs live in the sea or near the coast. Some live in fresh water or on land. Their bodies are protected by hard shells and they breathe through gills.

Some crabs are carnivorous and prey on fish, shrimp and mollusks, while a few crabs scrape or filter algae and organic debris.

What is the black paste in crabs?

The black paste in crabs is called crab paste, which is mainly composed of semen and organs in the seminal vesicles of male crabs. It is translucent jelly-like and rich in nutrients. When eating crabs, it is not advisable to drink tea or eat persimmons to avoid affecting your health. When storing crabs, they should be covered with a wet cloth and placed in the refrigerator's cold storage layer.

1. Crab roe

The black paste in the crab is crab paste, which is also a sign of sexual maturity of male crabs. It is composed of the organs of male crabs and the semen in the seminal vesicles. It is bluish white or black in color and is translucent jelly-like. It feels sticky, but it is rich in nutrients and contains protein, fat and minerals.

2. Food taboos

Crabs are rich in protein and mineral elements. When eating crabs, you should not drink tea or eat persimmons, because tea and persimmons contain acidic substances, which will react with protein to produce indigestible sediments, affecting the digestive function of the stomach and intestines.

3. Saving method

When storing fresh crabs, you can use cotton thread to tie up the crab claws and crab legs, then put them in the refrigerator's cold storage layer, and then cover the crab with a wet towel to keep it moist. It can be stored for three days. If you want to extend the storage time, you can put the crab in the freezer layer of the refrigerator.

Do male crabs have crab roe?

Male crabs do not have crab roe. Crab roe is the ovaries and digestive glands in the crab's body, containing unexcreted egg cells, which only female crabs have. Male crabs also have yellow stuff in their bodies, but it is the hepatopancreas. Male crabs have seminal vesicles, and the white substance inside is sperm. The collection of semen and organs in the seminal vesicles is crab roe (crab oil).

Crab roe is rich in trace elements, collagen, calcium, phosphorus and other nutrients essential to the human body, and contains high levels of fat and cholesterol, and is known as the "gold of the sea".

The best crab roe is bright orange or dark yellow in color, clean and free of impurities, fresh in taste, and dry enough. Crab roe can be fried, roasted, used in marinades, stuffing, etc.