Where is the largest shrimp in the world?

Recently, a fisherman in the Colombian tourist resort of Cartagena was surprised when he caught one of the world's largest sea shrimps, 30 centimeters long, which has been placed in a large aquarium for people to visit. According to the ITAR-TAS news agency on April 14, the lucky fisherman's name is Capriel Ponton, and after catching the giant shrimp, he excitedly told the local ** that he has been a fisherman for a long time, but it is still the first time in his life to see such a large shrimp. In the past, the largest shrimp he caught was no more than 10 centimeters long, so this big guy was so exciting for him!

Ponton was so excited that he didn't sell the prawn to any restaurant in Cartagena for a seafood feast. Once the fishing boat docked, the lucky fisherman rushed to deliver the prawns to a local aquarium. With the help of the aquarium staff, the "giants" among the shrimp were placed in a large aquarium for people to visit.

Ponton said he hopes the unusual shrimp will eventually become the mascot of the city of Cartagena. According to the report, the shrimp fishing industry in Colombia's coastal areas is very prosperous, and fishermen catch shrimp and sell them to restaurants in tourist destinations, where chefs use lemon juice, tomato sauce and other condiments to make shrimp into various dishes, and the shrimp caught by fishermen are generally in the range of a few centimeters to more than ten centimeters.

The largest shrimp in the world is the giant river prawn.

The world's largest freshwater shrimp is giant river prawn, which is native to Southeast Asia and is concentrated in some countries including Thailand and Myanmar.

One of the distinctive physical features of giant river prawn is that their heads are very large, very disproportionate to their bodies, and they look very incongruous, so they are highly recognizable. The male giant river prawn also has a distinctive foot, with the second leg being up to 40 cm long.

Habitat of giant river prawn:

Giant river prawn live in freshwater from juvenile to adult stage, mature broodstock mate in freshwater, hold eggs, discharge seedlings in saltwater, and larvae develop in saltwater.

Giant river prawn has higher requirements for dissolved oxygen content in the water, is not tolerant to fertilizer water, generally requires dissolved oxygen content of more than 5 milliliters, and the dissolved oxygen concentration has a great impact on shrimp feeding growth and feed efficiency, especially in the middle and late stages of breeding, the water should be changed frequently, and the transparency of the water is kept between 35 and 40 cm.

The largest sea shrimp in the world is the American crayfish, and the largest shrimp in the world is the ghost shrimp.

1. American crayfish.

The American crayfish, also known as the Boston lobster, is now the largest shrimp in the world. The largest of them is a Boston lobster, which weighs a staggering kilogram, and its total length is even more than a meter from the tail to the tip of the large claw. Boston lobsters are found on the North American coast of the Atlantic Ocean, Canada, Newfoundland, Labrador, Maine and Massachusetts in the United States, and feed mainly on fish and shellfish.

2. Ghost shrimp. Ghost shrimp generally refers to the giant shrimp, the largest of the shrimp, according to the record shows that the largest individual is 33 centimeters long and weighs 500 600 grams. Compared with ordinary shrimp, the size of ghost shrimp is more than 10 times more.

Ghost shrimp has a wide distribution area, from the southern part of Japan, South Korea, the coast of China, the Philippines, Indonesia, Australia, Thailand, India to the eastern coast of Africa.

The habits of crayfish and ghost shrimp

1. American crayfish.

The crayfish lives in shallow reefs or burrows in the gravel bottom, and feeds on fish, other small crustaceans and shellfish, and occasionally marine plants. Natural predators include cod, flounder and other dragon prawns.

American crayfish can only mate for a short time after shedding their shells. It is shelled about 2-3 times a year in childhood and about once a year in adulthood (4-7 years old). Because they live in cold waters below 600-700 meters, Boston lobsters have a short survival time after being out of the water and grow particularly slowly.

2. Ghost shrimp. Ghost shrimp usually lie dormant on the soles of the sea or in the mud and sand during the day, and begin to move in the evening. This species has a wide range of salinity adaptation, ranging from 10 to 35.

Adaptation to water temperature ranges from 14-32. The catch was higher in the range of 22-25 and 20-34 with a bottom salt. Ghost shrimp is judged to be a widely saline species, which has a great tolerance to salinity changes, and can live normally in the salinity range of 11-33.

The largest prawn is called Penaeus monodon. Penaeus monodon is a shrimp of the family Shrimp family. Penaeus monodon is the largest individual in the shrimp genus, with a maximum individual of up to 350 mm and a body weight of 500 grams, while mature individuals generally have an average body length of 300-350 mm and an average body weight of 350-400 grams.

Adult Penaeus monodon prefers to inhabit muddy or sandy seafloors, and is distributed in shallow waters with a water depth of more than 60 meters, with the highest catch in sea areas with a water depth of 20-40 meters. Penaeus monodon has a wide range of feeding habits, not only ingesting animal food, but also ingesting plant food, which is an omnivorous shrimp species, and the ingestion of animal species includes bivalves, monovalves, longtails, short-tails, and rotifer larvae; Plant foods include round sieves, diatoms, etc. It is found in the southern and eastern coasts of Africa, including India, Pakistan, Sri Lanka, Malaya, Thailand, northern Australia, Japan, China, etc.

The largest freshwater shrimp in the world is giant river prawn.

The giant river prawn is huge, with adults often measuring less than 25 centimeters in length, and the darker the waters, the larger they become. At present, the largest known giant river prawn is 110 centimeters long and weighs 600 grams.

Introduction to giant river prawn

Freshwater long-arm prawns, also known as giant river prawns, bighead prawns, and swamp blue prawns, are one of the largest freshwater prawns in the world. The giant river prawn is widely distributed and is native to India, Vietnam, Thailand, Myanmar, Malaysia, etc. Juvenile giant river prawns prefer to live in places with light and are phototaxis.

The whole body of the giant river prawn is blue, and the length of its second pair of feet is even larger than the length of the entire body of the giant river prawn. The size of the giant river prawn is medium among all shrimps, and the body size is neither large nor small, and the average weight is maintained at about one catty.

Giant river prawn production

Giant river prawn is also one of the most important aquatic products in the world's interior. According to relevant statistics, in 1984, the output of giant river prawn was 10,657 tons; In 1992, it quickly climbed to 31,235 tons, with an output value of 200 million US dollars, of which 28,728 tons were in Asia.

Giant river prawn growing environment

The most suitable water temperature for the growth of giant river prawn is 25-30, its growth and development will slow down after it is lower than 22, if the water temperature continues to be lower than 12, it may lead to death, so giant river prawn can only live in the southern waters of our country.

The largest sea shrimp in the world is the ghost shrimp.

Ghost shrimp is actually the common name of Penaeus monodon shrimp, named because it has nodes on its carapace, and because it likes to inhabit aquatic plants or algae, it is called "grass shrimp" in southern China and Taiwan. According to reports, the largest ghost shrimp is 33 centimeters long, even longer than an adult's arm, and can weigh more than 500 grams, so it can be called the "top of shrimp".

Ghost shrimp have a thick shell and usually have dark green, dark brown and earthy yellow horizontal spots on the body surface. It is the largest and fastest-growing species in the shrimp genus, with a general body length of centimeters and a weight of 137-211 grams, which is a valuable shrimp that is popular among diners.

Ghost shrimp has a wide distribution area, from southern Japan, south Korea, China's coast, the Philippines, Indonesia, Australia, Thailand oak potato, India to the east coast of Africa. There are two spawning periods in China's coastal areas every year, from February to April and from August to November.

Shrimp farming methods

1. The water quality is suitable.

When raising shrimp, the quality of water quality is directly related to the healthy development of shrimp, during the breeding period, the pH value of the pool water should be kept between, the transparency is 30-40 cm, usually pay attention to adding new water, regularly splash quicklime disinfection, in order to regulate the water quality, to prevent the occurrence of diseases.

2. Reasonable feeding.

In the case of hunger and lack of food, shrimp will kill each other, so the usual feeding amount must be sufficient, the food is mainly animal feed such as trash fish and poultry offal, supplemented by plant feed, such as wheat, aquatic weeds, rapeseed cake, etc., once a day in the morning and evening.

3. Scientific fishing.

In the process of raising shrimp, juvenile shrimp in the case of suitable temperature and sufficient feed, generally 60-90 days can grow to the specifications of the business, if the seedlings are released in March, they will start fishing around June, adhere to the principle of catching large and small, round fishing and wheel cooking, so as to improve the recapture rate and achieve the purpose of high yield and high efficiency.