CATDOLL : CATDOLL: What is the difference between whiteleg shrimp and blueleg shrimp? Could anyone who knows please tell me? Thank you!

What is the difference between whiteleg shrimp and blueleg shrimp? Could anyone who knows please tell me? Thanks!

There is no such species as the South American blue shrimp. The white shrimp (Penaeus vannamei Boone, 1931) is scientifically known as Penaeus vannamei. It belongs to the phylum Arthropoda, class Crustacea, order Decapoda, suborder Natantia, family Penaeidae, genus Penaeus, subgenus Lito-penaeus. It is a tropical shrimp with wide temperature and salt content. Common name: also known as white-leg shrimp, white shrimp, formerly translated as Van's shrimp, looks very similar to Chinese shrimp and black shrimp, and the average lifespan can be at least more than 32 months. The adult can reach up to 24cm in length, with a thin shell, a normal body color of light blue-gray, and no markings on the body. The walking legs are often chalky, so it is called white-leg shrimp.

The length of the tip of the frontal horn does not exceed the second segment of the first antennal stalk, and its tooth formula is 5-9/2-4; the cephalothorax is relatively short, and the ratio with the abdomen is about 1:3; the lateral grooves of the frontal horn are short, and disappear below the gastric spine; the cephalothorax has hepatic spines and branchial spines; the hepatic spines are obvious; the first antenna has two whips, the inner whip is thinner than the outer whip, and the length is roughly equal, but both are short (about 1/3 of the length of the first antennal stalk); the upper limbs of the 1st to 3rd pairs of walking legs are very developed, the 4th to 5th pairs of walking legs have no upper limbs, and the 5th pair of walking legs have rudimentary external limbs; the 4th to 6th abdominal segments have dorsal ridges; the tail segment has a central groove, but no marginal spines.

The whiteleg shrimp is native to the Pacific coastal waters of America. It is mainly distributed from northern Peru to the Gulf of Mexico, with the most concentrated distribution along the coast of Ecuador. The whiteleg shrimp has the advantages of large size, fast growth, low nutritional requirements, strong disease resistance, strong adaptability to changes in water environmental factors, low requirements for feed protein content, meat yield of more than 65%, and long survival time out of water. It is an excellent variety for intensive and high-yield farming, and is also the shrimp species with the highest single yield among the three major farmed shrimps in the world. The whiteleg shrimp has a thin shell and a fat body, delicious meat, high meat content, and rich nutrition. After harvest, its vitality is poor, so most of them are quick-frozen and put on the market.

In the 1980s, the development of shrimp farming had written a brilliant chapter for my country's aquaculture industry, greatly boosting the economic development of coastal areas, and driving the synchronous development of related industrial chains such as seedling breeding, bait production, and cold storage processing in coastal areas. Its role is indelible. However, in the 1990s, especially since 1992, due to the spread of shrimp virus diseases across the country, aquaculture workers could not find a suitable countermeasure for a while, which caused the shrimp farming industry to suffer a great loss and its economic benefits plummeted. Therefore, aquaculture workers worked hard to study shrimp virus diseases on the one hand, and explored new alternative species and new economic growth points for shrimp farming on the other hand, so the farming of white shrimp emerged.

In July 1988, Penaeus vannamei was introduced to my country from Hawaii, USA by the Institute of Oceanology, Chinese Academy of Sciences. In August 1992, artificial breeding achieved initial success. In 1994, a small batch of shrimp seedlings were obtained through artificial breeding. In 1999, Shenzhen Tianjun Industrial Co., Ltd. cooperated with Sangao Marine Biotechnology Company of the United States to introduce SPF vannamei shrimp and breeding technology from the United States, and successfully cultivated SPF vannamei shrimp seedlings. The price of early seedlings in 2000 reached 400-600 yuan/10,000 tails, and gradually decreased after 2001 and basically maintained at about 100 yuan/10,000 tails. The price of finished shrimp has also dropped from nearly 100 yuan per catty in the early stage of introduction to about 10 yuan at present.

The growth rate of Penaeus vannamei in artificial culture is fast, and it can reach the market size in 60 days; it has a wide range of suitable salt (0-40‰), and can be cultivated in pure freshwater, brackish water, and seawater. It can grow from natural sea areas to freshwater ponds, thus breaking the regional restrictions, and it is resistant to high temperatures and has strong disease resistance; it has a mixed diet and low requirements for feed protein, 35% of which can meet the growth requirements. It is a high-quality variety of "marine shrimp light farming", which expands its breeding area. To cultivate Penaeus vannamei, the size of the shrimp fry should be above 2 cm, and the seedlings should be diluted to zero degrees. The pond should be 3-5 mu, with a water depth of about 1.5 meters. The seedlings should be released at the end of May and the beginning of June, and the water temperature should be above 20℃. Under normal breeding conditions, 20,000 shrimp fry are released per mu, and 500-100 flower carp and silver carp are raised. They are mainly fed with granular feed, and photosynthetic bacteria and water quality regulators are used regularly to regulate water quality and prevent shrimp diseases.

What is the difference between lobster and shrimp?

1. Shrimp is an arthropod crustacean, and there are many types, including green shrimp, river shrimp, grass shrimp, crayfish, shrimp (white shrimp, blue shrimp), prawns, shrimp, mantis shrimp, lobster, lobster, etc.

Shrimp can be roughly divided into freshwater shrimp and marine shrimp! Lobster is a marine shrimp! It is only a type of shrimp! And shrimp is just a general term!

2. Lobster (scientific name: Palinuridae) is the general name for 19 species of lobsters in four genera of the family Palinuridae, order Decapoda, class Crustacea, phylum Arthropoda. It is also known as prawn, dragon head prawn, shrimp king, sea shrimp, etc.

It has a large head and chest, a hard, colorful shell, a short abdomen, a body length of 20 to 40 cm, a weight of about 0.5 kg, and no claws. It is the largest type of shrimp. The heaviest can reach more than 5 kg and is called a lobster tiger.

The body is thick and cylindrical, with a slightly flat back and abdomen, a well-developed cephalothorax, thick and many spines, a pair of strong supraorbital spines in the center of the front edge, and a closed gill chamber. It is mainly distributed in tropical waters and is a precious seafood.

1. Methods to distinguish various shrimps:

There are four common types of shrimp on the market: Macrobrachium rosenbergii, prawns, mud shrimp, and river shrimp.

(1) The Macrobrachium rosenbergii is relatively large in size. Its most obvious feature is that its thoracic carapace is filled with reproductive glands, which look a bit like crab roe, and its claws are mostly blue.

(2) There are many varieties of shrimp. Currently, there are three common types of shrimp on the market: Chinese shrimp (white shrimp), whiteleg shrimp, Japanese shrimp (tiger shrimp), and black tiger shrimp (grass shrimp).

(3) The mud shrimp (sand shrimp) is also called the knife-headed shrimp. It has special patterns on its body and some yellow dots at the end of its feet. It looks very special. The mud shrimp's forehead is relatively straight, and generally only the upper edge has 7 to 9 serrations, which is different from ordinary shrimp.

(4) River shrimp (green shrimp), which have plate-like swimming legs, fan-shaped tails, highly curved eyeballs, and slender legs.

2. How to distinguish various lobsters:

(1) Spiny lobster (Panulirus homarus, commonly known as blue dragon, green shell, salon),

The whole body is green and easy to identify. Most of the common ones in the market are local dragons, and the others also come from Sri Lanka, South Asian waters and other places.

(2) Splendid lobster (Panulirus ornatus, commonly known as flower lobster),

It is the largest lobster in the genus Homarus (with beautiful colorful patterns, and can weigh up to 4-5 kg), with a maximum body length of 60 cm, but usually 20 to 35 cm.

(3) Black and white lobster (Serrata serrata),

The whole body is dark green with black and white stripes, and it is also called Shanlong. The meat is snow-white and crystal clear, sweet and crisp, and tastes very good.

(4) Australian rock lobster (Australian lobster,

Australian lobsters are extremely durable and easy to transport over long distances. They have firmer meat, are chewy and sweet, and although they don't taste as good as local lobsters, they are cheaper.

(5) Canadian lobster (also known as Boston lobster),

Boston lobster has a pair of large lobster claws, the flesh of which is coarse due to excessive activity. In comparison, the shrimp body has no roe, but the meat is tender and delicate.

(6) American Red lobster,

American red lobster is similar to Australian lobster and is a common species of lobster. Its meat is slightly red. It has long whiskers, no claws, and bright red stripes on its legs. Its meat is smooth, tender, and rich in nutrition, making it a valuable seafood.

(7) Mexico Red lobster,

Red lobsters are large and meaty. They are the largest of the lobster genus. They are similar to American lobsters. Their bodies are pink or red. They have delicious meat, rich nutrition and strong vitality.

It is a precious aquatic product and a favorite of high-end seafood restaurants around the world.

(8) Crayfish (Procambarus clarkii)

It is also called Procambarus clarkii, red crayfish and freshwater crayfish. It looks like a shrimp but has a hard shell. The adult is about 5.6 to 11.9 cm long, dark red, with a nearly black shell, and a wedge-shaped stripe on the back of the abdomen.

Crayfish selection

First, look at the size. Choose crayfish of uniform size. Crayfish produced in legal artificial farms are uniform in size and can be purchased with confidence. However, wild crayfish grown in poor environments are of different sizes and are mixed with old and young, so it is best not to buy them;

Second, look at the color. Choose crayfish that have just grown up and are red with a natural healthy luster. Lobsters that are black or red with a hint of iron blue are lobsters that have absorbed more harmful substances and are best not to buy;

Third, look at the hair. Choose crayfish with neat and white hair on the abdomen and claws, which are basically raised in clean water.

Fourth, look at the "texture". Crayfish with a texture as elastic as nails have just grown up and changed their shells, so they are suitable for purchase. If you touch the shrimp shell with your hand and it is hard as iron, it is undoubtedly an old lobster and should not be purchased.

Reference for the above content: Baidu Encyclopedia - Shrimp

Baidu Encyclopedia - Lobster

1. Shrimp is an arthropod crustacean, and there are many types, including green shrimp, river shrimp, grass shrimp, crayfish, shrimp (white shrimp, blue shrimp), prawns, shrimp, mantis shrimp, lobster, lobster, etc.

Shrimp can be roughly divided into freshwater shrimp and marine shrimp! Lobster is a marine shrimp! It is only a type of shrimp! And shrimp is just a general term!

2. Lobster (scientific name: Palinuridae) is the general name for 19 species of lobsters in four genera of the family Palinuridae, order Decapoda, class Crustacea, phylum Arthropoda. It is also known as prawn, dragon head prawn, shrimp king, sea shrimp, etc.

It has a large head and chest, a hard, colorful shell, a short abdomen, a body length of 20 to 40 cm, a weight of about 0.5 kg, and no claws. It is the largest type of shrimp. The heaviest can reach more than 5 kg and is called a lobster tiger.

The body is thick and cylindrical, with a slightly flat back and abdomen, a well-developed cephalothorax, thick and many spines, a pair of strong supraorbital spines in the center of the front edge, and a closed gill chamber. It is mainly distributed in tropical waters and is a precious seafood.

Additional information:

1. Methods to distinguish various shrimps:

There are four common types of shrimp on the market: Macrobrachium rosenbergii, prawns, mud shrimp, and river shrimp.

(1) The Macrobrachium rosenbergii is relatively large in size. Its most obvious feature is that its thoracic carapace is filled with reproductive glands, which look a bit like crab roe, and its claws are mostly blue.

(2) There are many varieties of shrimp. Currently, there are three common types of shrimp on the market: Chinese shrimp (white shrimp), whiteleg shrimp, Japanese shrimp (tiger shrimp), and giant tiger shrimp (grass shrimp).

The meat of prawns is more delicate, and male prawns do not have large claws. The frontal sword of Chinese prawns is very long, in layman's terms, longer than the mouth, while the frontal sword of whiteleg shrimp is relatively short.

Another way to distinguish them is by the antennae, which are longer than those of Penaeus vannamei. The Japanese shrimp is relatively easy to identify, with a hard and darker shell. It is also called "bamboo shrimp" because of its bamboo-like texture.

Compared with the Japanese shrimp, the shell of the giant tiger shrimp (grass shrimp) is darker in color, and its body is covered with horizontal stripes of black-brown and khaki.

(3) The mud shrimp (sand shrimp) is also called the knife-headed shrimp. It has special patterns on its body and some yellow dots at the end of its feet. It looks very special. The mud shrimp's forehead is relatively straight, and generally only the upper edge has 7 to 9 serrations, which is different from ordinary shrimp.

(4) River shrimp (green shrimp), which have plate-like swimming legs, fan-shaped tails, highly curved eyeballs, and slender legs.

2. How to distinguish various lobsters:

(1) Spiny lobster (Panulirus homarus, commonly known as blue dragon, green shell, salon),

The whole body is green and easy to identify. Most of the common ones in the market are local dragons, and the others also come from Sri Lanka, South Asian waters and other places.

(2) Splendid lobster (Panulirus ornatus, commonly known as flower lobster),

It is the largest lobster in the genus Homarus (with beautiful colorful patterns, and can weigh up to 4-5 kg), with a maximum body length of 60 cm, but usually 20 to 35 cm.

(3) Black and white lobster (Serrata serrata),

The whole body is dark green with black and white stripes, and it is also called Shanlong. The meat is snow-white and crystal clear, sweet and crisp, and tastes very good.

(4) Australian rock lobster (Australian lobster,

Australian lobsters are extremely durable and easy to transport over long distances. They have firmer meat, are chewy and sweet, and although they don't taste as good as local lobsters, they are cheaper.

(5) Canadian lobster (also known as Boston lobster),

Boston lobster has a pair of large lobster claws, the flesh of which is coarse due to excessive activity. In comparison, the shrimp body has no roe, but the meat is tender and delicate.

(6) American Red lobster,

American red lobster is similar to Australian lobster and is a common species of lobster. Its meat is slightly red. It has long whiskers, no claws, and bright red stripes on its legs. Its meat is smooth, tender, and rich in nutrition, making it a valuable seafood.

(7) Mexico Red lobster,

Red lobsters are large and meaty. They are the largest of the lobster genus. They are similar to American lobsters. Their bodies are pink or red. They have delicious meat, rich nutrition and strong vitality.

It is a precious aquatic product and a favorite of high-end seafood restaurants around the world.

(8) Crayfish (Procambarus clarkii)

It is also called Procambarus clarkii, red crayfish and freshwater crayfish. It looks like a shrimp but has a hard shell. The adult is about 5.6 to 11.9 cm long, dark red, with a nearly black shell, and a wedge-shaped stripe on the back of the abdomen.

Reference: Baidu Encyclopedia - Shrimp

Baidu Encyclopedia - Lobster

Shrimp is an arthropod crustacean, and there are many types, including green shrimp, river shrimp, grass shrimp, crayfish, shrimp (white shrimp, blue shrimp), prawns, shrimp, mantis shrimp, lobster, etc.

The shrimp family is too big! It is roughly divided into freshwater shrimp and marine shrimp! Lobster is a marine shrimp! It is only a type of shrimp! And shrimp is just a general term!

Lobster is a type of shrimp. Shrimp is a general term.

The blood of lobsters is the most peculiar of all creatures. I forgot whether it is blue or green. The blood of other animals is red.