The scientific name of Pippi shrimp is Squilla, which belongs to Arthropoda, Crustacea, Mollusca, Shrimp Subclass, Gastropoda (there is another order under this subclass), and there are four families below: Deep Squilla, which refers to Squilla, Squilla and Squillidae. Commonly known as Pipi Shrimp, Shrimp Rake, Shrimp Male Camel, Pipa Shrimp, mantis shrimp and Pistachio Shrimp.

Stomatopod is the only subclass of Carnivora, among which the existing species are divided into four superfamilies: Deep Shrimp, Finger Shrimp, Shrimp and Crested Shrimp. All marines. Shrimp predation originated in Mesozoic and Jurassic, with more than 300 species. Most species live in tropics and subtropics, and a few species live in temperate zones. It is found all along the coast of China, and the South China Sea has the most species, with more than 80 species found.

The body of Pippi shrimp is long and narrow, slightly flat. The head breastplate only covers the first four sections of the head and chest, and the last four sections of the chest are exposed and can move. The abdomen has seven segments, and the boundary is obvious, but it is bigger and wider than the head and chest. There are a pair of big compound eyes with handles and two pairs of antennae at the front end of the head. The top of the first pair of inner limbs is divided into three whiplike limbs, and the second pair has scales on the outer limbs. There are five in the chest; For appendages, the end is a sharp hook used to catch food. The chest has six parts. The first five appendages have gills, and the sixth pair of abdominal limbs is developed, forming a tail fan with the caudal segment. The mouth is located between the two jaws on the ventral surface. The anus is open on the ventral surface of the caudate segment. This shrimp is hermaphrodite, and the male has a connector at the end of the chest.

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