Crab paste is a collection of semen and organs of male crab seminal vesicle, and it is also a sign of male crab's strength and maturity. The natural state of crab paste is bluish white translucent jelly-like liquid; After steaming, it is translucent, sticky and a little greasy. There are two kinds of crab paste: crab paste and sea crab paste.
Introduction of crabs
Crab is the general name of all short-tailed and crooked-tailed races. There are about 4,700 species in the world and about 800 species in China. The common genera are male crab, swimming crab, river crab, fiddler crab and mitten crab. Although the genera of porcelain crab, cicada crab, pseudolith crab, hermit crab and coconut crab in the suborder Oblique Tail are also called crabs, they are different from the real crabs in the suborder Short Tail.
Like most crustaceans, almost all crab larvae are completely different from adults when they are hatched from eggs. Larvae is called Daphnia larva, which is tiny, transparent, round and has no limbs and swims on the sea. After molting several times, the body size increases, which is called megalopa. The body and limbs are more like crabs, but the abdomen is large and does not fold under the chest.
After peeling again, it looks like an adult. There are several kinds of crabs, especially those living in fresh water, which are not metamorphosed during their development and are shaped like tiny adults after hatching from eggs.
Like many other crustaceans, crabs are usually omnivorous and scavengeful. But many species are predatory, and some are phytophagous. Usually move by walking or crawling. The transverse gait of common crab is familiar to people, and it is also the characteristic of most crabs. The species of Portunus and some other types swim with flat paddle-like appendages with dexterity.