What is the difference between blue crab and pike crab, is white crab a pike crab?

Appearance difference 1Blue crab: The carapace and appendages of blue crabs are green-edged.

The dorsal carapace is smooth and slightly raised, with a distinct "H"-shaped indentation on the back, and four protruding triangular teeth on the dorsal carapace of the head and eyes. Crabs vary in size and have spines. Hairy crabs:

Hairy crabs have a blue dorsal shell and a white belly with a slightly yellow or brown color. The tips of the claws of the hairy crabs in Yangcheng Lake are golden yellow, and the claws are powerful and powerful, and they can crawl freely on the surface of the floor tiles. The claws of Chinese hairy crabs have slender short hairs.

Difference in fullness 2 Blue crab: The fullness of blue crab is easy to judge because blue crab is a meat crab. Even small blue crabs are full of meat, so as long as the weight reaches a certain level, the blue crab will be full.

Hairy crab: Hairy crab is a type of crab that is easy to judge how full the meat is. Just press the thinnest calf of the hairy crab.

If it feels full, the meat is full. If it is empty, it means that the meat of the hairy crab is not full enough. Sexual maturation differences 3

Blue crab: In areas with a suitable temperature, blue crabs will enter the period of sexual maturity as long as the single head reaches a certain weight, so there will be a period of sexual maturity all year round. Hairy crabs:

The sexual maturity period of hairy crabs is in the ninth lunar month of each year. Nine females and ten males say that they eat crab roe hairy crabs in the ninth month of the lunar calendar. Usually, the belly of a hairy crab with crab roe will turn slightly yellow, and it will feel full and transparent.

Differences in nutritional content: Blue crab is rich in protein, some carbohydrates are sweet **, and some unsaturated fatty acids. At the same time, the content of vitamin A, carotene and minerals is also high.

Hairy crabs: Hairy crabs have a higher protein and fat content than blue crabs, but they have a lower carbohydrate content than blue crabs, and they are also high in minerals, mainly vitamin and carotene content.

Blue crab: The shell and appendages of the saw-edged blue crab are blue-green, the cephalothorax is slightly oval, the surface is smooth, **slightly raised, there are obvious H-shaped depressions on the surface of the carapace, there are four equally large dentals on the forehead, the chelicerae are smooth, the crab is asymmetrical, and there are spines. Barracuda crab:

Barracuda crabs are usually male-tea-green, females are purple, the ventral surface is grayish-white, and their cephalothorax is fusiform.

White crabs are pike crabs. The pike crab, commonly known as the white crab in some places, is covered with a hard carapace and a dark green back, and its shape resembles a woven shuttle, hence its name. It has many origins, among which, the waters near the Zhoushan Islands are the main production areas of pike crabs in China.

The pike crab is called the pike because of the pike-shaped head and chest armor. The ** of the carapace has three protrusions, so it is also called the three-wart pike crab, which belongs to arthropods. Males have a pointed and smooth umbilicus, with long chelae and a bluish shell surface; The female has a round umbilicus with villi hairs, and the shell surface is ochre or spotted.

The crab meat is fat and delicious, has high nutritional value and economic value, and is suitable for temporary breeding and fattening of seawater.

cephalothorax fusiform, almost twice as wide as long; The cephalothorax surface is covered with fine granules, with 2 granular transverse embankments and 3 verrucous protrusions; forehead with 2 sharp teeth; The anterior lateral margin has 9 acute teeth, and the terminal teeth are long and spiny, protruding outward. chelicerae stout, longer than cephalothorax; The long nodes are prismatic, and the male long nodes are more slender, with 4 acute spines on the anterior margin.

The differences between blue crab and pike crab are as follows:1. Appearance difference.

The blue crab is a saw-edged blue crab shell and appendages with a blue-green color, the cephalothorax is slightly oval, the surface is smooth ** slightly raised, there are obvious H-shaped depressions on the surface of the carapace, there are four teeth of equal size on the forehead, the chelicerae are smooth and the crab is asymmetrical, there are spines, and there are no protrusions on the back legs. The body color of the pike crab will change with the environment, usually the male crab is tea-green, the female crab is purple, the ventral surface is grayish-white, its cephalothorax is fusiform, there are 3 prominent wart-like bulges on the surface, there are spines on both sides, the carapace is slightly raised, and the surface is scattered with particles.

2. Differences in nutritional content.

Blue crab contains more carbohydrates, relatively low protein and fat content, and is also rich in mineral elements, of which potassium ions are higher than sodium ions, and its vitamin A and carotene content is very rich. Barracuda crab contains lower carbohydrates, higher protein and fat than blue crabs, rich in mineral elements, calcium-phosphorus ratio is better than that of blue crabs, but the content of vitamins is very low, especially carotene and vitamin A are low.

3. Differences in eating methods.

The meat of blue crab is tender and sweet, so the common eating method is steaming, which can highlight the salty and sweet taste of blue crab, and in addition to steaming, it can also have flavor, spicy and other cooking methods. Steaming is also a good way to eat pike crabs, because they are large and meaty, they are also used to make side dishes, such as fried pike crab with rice cakes, and the taste is also very good.