What is a square crab called, what kind of crab is this

Square crabs are called phase crabs.

The phase crab is a small freshwater crab. It is also known as grinding and crabbing. The scientific name is Xiangte crab. Crustaceans, Crabidae. The cephalothorax is slightly square and 3-4 cm wide.

Cockroach is a small freshwater crab. It is also known as grinding and crabbing.

The scientific name is Xiangte crab. Crustaceans, Crabidae. The cephalothorax is slightly square and 3-4 cm wide. Crabs are meat-eating cockroaches, which are similar to scavengers. Cockroaches eat reeds in summer.

leaves, a grassy smell. Summer cockroaches are not usually edible. In winter, the cockroaches hibernate, and at this time they are no longer eating, and they can be eaten when they are dug up with a shovel.

The scientific name of the river crab is also called the Chinese mitten crab, this crab mainly grows in fresh water, but breeds in seawater, and generally hides on the banks and stones of rivers and lakes.

Stone crabs. Stone crab is also known as crab crab and brook crab, stone crab is a kind of freshwater and brackish aquatic crab, which likes to inhabit streams or under rocks in streams all year round.

Blue crab. The blue crab is also called the saw-edge blue crab, the shell of the blue crab is very hard, and it is oval, it looks a little flat, and the chest is very strong, and the two claws are very hard, the same as the blue crab, so some people call it according to the blue crab.

Flower crab. The name of the flower crab is also called the open sea pike crab, its shell is like a shuttle, so it is called a pike crab, and its double chela is very sharp and very powerful.

Red crab. The red crab is also called the cross crab, its head and chest armor is also very wide, the surface is relatively smooth, the chelicera is relatively thick, the front of the two fingers is dark brown, and the chelicerae also have yellow markings, which looks very recognizable.

Brown crab. Brown crab is also called steamed crab, it still has a few soft hairs on its side, the shape of the chelicerae is asymmetrical, the overall volume is small, the shell on the back is not as wide as the shell above, the chelicerae at the back end is rectangular, and the rear is a triangular chelicera.

The cephalothorax was wider than the length, had a reddish surface, had smooth lumpy protrusions in the anterior part, granular protrusions in the posterior, and two longitudinal grooves in the middle. The forehead is narrow and can be divided into two teeth. Small eye sockets.

The anterior lateral margin is serrate, the posterior lateral margin is prominent, divided into 4 unequal acute teeth with dark purple between the teeth, and 7 blunt teeth on the posterior margin, with granular teeth. Dense with short villi along the underside of the edges. Chelicerae are strong, asymmetrical, with 4 leaf-like protrusions on the dorsal margin of the long segment, and sometimes purple on the outside of the carpal segment.

Muscle contains proteins, peptides, amino acids, and lipids. The shell contains chitin and carotenoid pigments. The meat is tender, delicious and has high nutritional value.

The meat nourishes, reduces swelling, and the shell invigorates blood and dissolves blood stasis. The Lord disperses all heat, cures stomach qi, regulates tendons and veins, and dissipates food; Replenish bone marrow, nourish liver yin, fill stomach juice, nourish tendons and invigorate blood, cure gangrene and heal nucleus.

Judging by the crab claws, this is certainly not a brown crab. Brown crab.

Oregoniidae snow crab chionoecetes decapod arthropods.

The picture below shows the ? Snow Crab Chionoecetes Opilio (Curved Gray-eyed Snow Crab), commonly known as Matsuba Crab, Red Spider Crab, Queen Crab.

It is distributed in the North Pacific Ocean, the Northwest Atlantic, and the cold waters of the Arctic.

This one should be king crab.

Portunidae round-toed crabs are decapods of the genus Ovalipes.

The picture below shows the <> of Ovalipes punctatus

Width and height of about 10 cm. A** has an H-shaped hail mark, and there are 5 sharp teeth on the front edge of the a**.

Lives in the mud of the shallow sea. China is produced in the East China Sea and the South China Sea.

This is a blue crab with a saw edge, a saltwater crab, which is large and has a lot of meat.

Victory Dawn Crab (Red Dot Dawn Crab).

The cuirass of the crab head of Victory Dawn is nearly rounded, with small red spots on the back, 6 small inconspicuous protrusions in the middle, only traces of two in the anterior stomach area, and fine particles near the anterior gill area, middle gill area, stomach area and heart area. The forehead is slightly wider than the eye socket, the middle of the anterior margin is prominent, divided into two teeth by a "V" shaped notch, and the lower inner eye socket teeth are smooth and obtuse, with three small blunt teeth on the margin. The anterior margins are shorter than the posterior margins, the lateral prominences are stout, the terminals are pointed, and the posterior margins are slightly raised at the last 1 and 3.

The trailing margin is small and rounded. (Quoted from Victory Dawn Crab - Sogou Encyclopedia).

Dawn crab family matutidae Dawn crab genus Matuta decapod arthropods.

The picture below shows the ? Victory Dawn Crab Matuta Victor(Tenacious Dawn Crab), commonly known as Diving Sand Crab, Sand Sui.

Inhabits the intertidal or subtidal zone at 10-15m of sediment, sand or crust seabed.

Big brother, can you tell the crab to see the belly? . .

Fiddler crab Of the two pincers of the male's fiddler, one is particularly large and the other is of normal size. It uses its small pincers to dig small animals out of the mud and put them in its mouth to eat, while the large pincers are used to show off to other members of its kind.

This crab lives on tropical beaches. At low tide, they crawled out of their holes and waved their pincers at each other, some raising their pincers like shields, others waving them, and others jerking both pincers. This act of displaying the pliers is a manifestation of this:

This sand is mine, get out of the way! ”

When the burrow is invaded by other crabs, some fiddler crabs make a grasshopper-like "chirping" sound, which is the sound it makes by rubbing its hard shell with its pincers.

Only male fiddler crabs have oversized pincers, which are used to show off fighting other males.

If another tide sweeper enters their territory, they will fight. Each crab tries to knock their opponent to the ground with their large pincers.

At high tide, each crab cuts a small round piece of mud and brings it back to its burrow. They burrow into the hole and lay down the mud as a lid to cover the hole. The bubbles are sealed in the hole, and the crab breathes in the air until the tide recedes again.

One pincer is large, the other is small, "fiddler crab".