A, China shrimp:
Alias: prawn, prawn, meat shrimp, yellow shrimp (male), green shrimp (female) and prawn.
Morphological characteristics: the body is long and flat. Female body length18 ~ 24 cm, male body length13 ~17 cm. The shell is thin, smooth and transparent, the female body is blue, and the male body is brown. Usually, the female shrimp is larger than the male shrimp. The whole body of prawn consists of 20 segments, including 5 segments of head, 8 segments of chest and 7 segments of abdomen.
Except the caudal segment, each segment has a pair of appendages. There are five pairs of walking feet, the first three pairs are pincers and the last two pairs are claws. The center of the front edge of the head breastplate protrudes to form the frontal angle. The upper and lower edges of the frontal angle are serrated.
Second, Penaeus japonicus
Alias: flower shrimp, bamboo shrimp, flower-tailed shrimp, spotted shrimp, and car shrimp.
Morphological characteristics: the body is blue-brown with horizontal spots, and the tail tip is bright blue. The frontal angle is slightly curved, with 8 ~10 teeth on the upper edge and 2 teeth on the lower edge. The first antenna whip is very short, shorter than1/2 of the head and breastplate. The first pair of feet have no stings, the top of the middle leaf of the male shrimp connector has a very thick protrusion, and the female connector is long cylindrical. Mature shrimp is more female than male.
Third, Penaeus monodon
Alias: grass shrimp, flower shrimp, bull shrimp. The United Nations Food and Agriculture Organization is known as the Great Tiger Shrimp.
Morphological characteristics: the body is covered with dark brown and khaki alternating with horizontal spots. The frontal angle has 7-8 teeth on the upper edge and 2-3 teeth on the lower edge. The lateral sulcus of frontal angle is quite deep, extending behind the supraocular puncture, but the lateral ridge of frontal angle is low and blunt, and the central sulcus of posterior ridge of frontal angle is obvious. There is obvious liver ridge, but no forehead and stomach ridge.
Fourth, Penaeus penicillatus
Alias: prawns, white shrimps, red-tailed shrimps, red shrimps and prawns, commonly known as red-tailed shrimps by FAO.
Morphological characteristics: the body is light brown, with 7 ~ 8 teeth on the upper edge of the frontal angle and 4 ~ 6 teeth on the lower edge. The lateral view of the frontal base is higher than that of Penaeus China and lower than that of Penaeus Moji. The posterior ridge of frontal angle extends to the vicinity of the posterior edge of head and breastplate, and there is no central sulcus.
The first antenna whip is slightly longer than the head and breastplate, and the third jaw of male shrimp has no brush-like hair, which is1.2 ~ 2.7 times as long as the second section. There are intermittent pits on the frontal ridge. The wart process at the top of the front piece of the female organ is smaller than that of Penaeus vannamei.
V. Penaeus breviscapus
Alias: black shrimp, flower shrimp, abundant shrimp, flower-footed shrimp, bamboo shrimp and bear shrimp, which are commonly known as edge tiger shrimp by FAO.
Morphological characteristics: the body is dark brown and has a horizontal pattern of stopping brown and dark yellow. Swimming limbs are purplish red. There are 6 ~ 8 teeth on the upper edge of the frontal angle and 2 ~ 4 teeth on the lower edge. The lateral sulcus of the frontal angle only extends to the base of the upper gastric puncture, and the center of the posterior ridge of the frontal angle is obvious.
There is obvious liver ridge, but no forehead and stomach ridge. The first antenna whip is shorter than its handle. In the third step, the foot is beyond the middle of the second antenna scale, and in the fifth step, the foot has small outer limbs.
Six, oral shrimp
Alias: Pippi Shrimp, Shrimp Rake, Shrimp Male Camel.
Morphological characteristics: Oratosquilla oratoria is also called Oriental Squilla. The first four segments of the head and abdomen healed, and the breastplate and thoracic segment on the back were obvious. The abdomen has seven sections, and the boundary is also obvious, but it is larger and wider than the head and chest. At the front end of the head, there are a pair of large compound eyes with handles and two pairs of antennae.
The top of the first pair of inner limbs is divided into three whiplike limbs, and the outer limbs of the second pair are scaly. There are five in the chest; For appendages, the ends are sharp hooks to catch food. There are six segments in the chest. The appendages of the first five segments have gills, and the sixth pair of abdominal limbs is developed, which forms a tail fan with the tail segment. The shrimp is hermaphroditic, and the male has a connector at the end of the chest.
Seven, the amount of new prawns.
Alias, Ma Shrimp, Tiger Shrimp, Flower Tiger Shrimp, Mud Shrimp, metapenaeus ensis, Sand Shrimp and Red Claw Shrimp.
Morphological characteristics: the body is light brown, with 6 ~ 9 teeth on the upper edge of the frontal angle and no teeth on the lower edge. There is no central sulcus, the whip on the first antenna is about1/2 of that of the head and chest armor, and there is a longitudinal ridge on the back of the 1st ~ 6th abdominal segment, and there is no lateral thorn in the tail segment. The first pair of walking feet has seat joint thorns, and the last pair of walking feet has no outer limbs.
The morphological characteristics of the related Penaeus monodon are similar to those of Penaeus monodon, except that its abdominal swimming limbs are bright red, the male connector is Y-shaped, the female connector is C-shaped, and the central plate is platform-shaped.
Eight, China shrimp.
Alias: Hairy Shrimp, Red Hairy Shrimp, Shrimp Skin, Water Shrimp, Small White Shrimp, Miao Shrimp and Small White Shrimp.
Morphological characteristics: small body, flat side, 2.5 ~ 4 cm long. The shell is thin. The frontal angle is short, the side is slightly triangular, the lower edge is oblique and slightly curved, and the upper edge has two teeth. The caudal segment is very short, and the end is round without thorns; The second half of the lateral margin and the end margin are feathered.
There are only three pairs of feet and they are tiny pincers. The body is colorless and transparent, only the mouthparts and the touch whip are red, and the ventral surface of the sixth abdominal segment is slightly red.
Duck's paw is rich in collagen, which is equivalent to bear's paw with the same quality. Paws are the basic organs of exercise, with many tendons, thick skin and no meat.