Appearance characteristics: the shrimp is long and slightly flat, hermaphroditic, and the adult female shrimp is larger than the male shrimp and has different body color; The female shrimp in China is gray-blue, while the male shrimp is yellow. Shrimp is covered with a chitin exoskeleton shell, which is secreted by epidermal cells below. Characteristics of life habits: prawns can be divided into settlement type and migration type. The former lives in shallow coastal waters and often dives into the sand bottom during the day, which is largely inactive.

1. Appearance characteristics: the shrimp is slightly flat and hermaphrodite, and the adult female shrimp is larger than the male shrimp and has different body colors; The female shrimp in China is gray-blue, while the male shrimp is yellow. Shrimp is covered with a chitin exoskeleton shell, which is secreted by epidermal cells below.

2. Life habit characteristics: prawns can be divided into settlement type and migration type. The former lives in shallow coastal waters, often dives into the sand bottom during the day and does not move on a large scale. The latter type lives in the muddy waters along the estuary and often moves and migrates on a large scale. Shrimp mainly feeds on benthic invertebrates, such as polychaetes, small crustaceans and bivalve mollusks, and sometimes catches zooplankton.