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Morphological characteristics of lemon
Yellow-green in color, larger than eggs, similar in appearance to peaches, smooth in appearance, greasy in meat, generally edible and often used as spices.
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Lemon sha children Hua
Hello, you can use it properly, just don't use too much, and I suggest you use less radioactive products during pregnancy.
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I need information about lemon shark farming urgently. The more detailed the better, thank you! ! ! !
Lemon shark
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Lemon shark (scientific name: Negaprion queenslandicus) is a kind of fish belonging to the genus Lemon Shark. In China, it is distributed in the South China Sea and other sea areas.
Chinese name: lemon shark
Two-name approach: Queens, Niagpion.
Field: animal kingdom
Phylum: Chordata phylum
Class: cartilaginous fish
Order: Ceratoptera
Family: the real shark family
Genus: lemon shark
Species: lemon shark
Distribution: South China Sea and other sea areas.
catalogue
Introduction to biology
morphological character
Main food
Distribution area
protectionism
Feeding cost
laws and regulations
Introduction to biology
morphological character
Main food
Distribution area
protectionism
Feeding cost
laws and regulations
Expand and edit this introduction to biology.
Lemon shark is a kind of shark, named after its lemon-like color. It is a medium-sized shark with fierce temperament, which poses a certain threat to human beings. However, in Zhengzhou, many "players" began to regard sharks as their new favorites, and keeping sharks has also become a fashion behavior that highlights personal character. Many players think that keeping sharks in the office is a sign of publicity and wildness.
Edit the morphological characteristics of this paragraph
The length of lemon sharks is generally between 8 and 10 feet (about 2.4 to 3 meters), and the largest lemon shark recorded is over 12 feet (about 3.6 meters). Lemon shark is yellow-brown, yellow to the abdomen, named after the color like lemon, belonging to medium-sized sharks. Lemon sharks have sharp teeth and small corners of their eyes. Sometimes they live in flat beaches and mangroves in lagoons, and when they grow up, they will move to deep water about 400 meters deep.
Edit the main food in this paragraph.
Bony fish, shrimp and crabs, seabirds
Edit the distribution area of this paragraph
Lemon sharks mainly inhabit the offshore waters of the United States, Brazil, America, Caribbean, Gulf of Mexico and other parts of the Atlantic Ocean. Lemon shark
Lemon sharks like warm shallow waters and often cruise in groups along the coast of southern and southwestern Florida. Unlike great white sharks, lemon sharks don't need to swim constantly to keep breathing. In addition, lemon shark has been identified as a highly migratory shark population.
Edit this protection policy
The National Marine Fisheries Department under the National Oceanic and Atmospheric Administration of the United States is responsible for protecting lemon sharks from being victims of commercial overfishing.
Edit this paragraph for breeding.
Sharks, like most aquatic animals, were once considered as low IQ animals and could only form a simple "social order". Although little is known about the habits of adult sharks, recent research has challenged this view. The observation results of large-scale lemon sharks show that they seem to mate once a year, and their reproductive journey is similar to that of salmon. On June 5,438+065,438+1October 19, 2009, some media reported that there were merchants selling lemon sharks in Chenzhai Flower Market in Zhengzhou, China, with a body length of about 60 cm and a asking price of 6,000 yuan. The merchant said that more than 10 pieces have been sold. Lemon shark
The newspaper reporter said that many bosses in Zhengzhou like sharks, a fierce marine creature. Many bosses think that keeping sharks is a fashion, while many players think that keeping sharks in the office is a sign of publicity and wildness.
expense
According to a person who keeps lemon sharks, keeping two sharks consumes 10 live goldfish every day. The cheapest price for each goldfish is 3 yuan, and the cost of a moonlight meal is 900 yuan. Plus four oxygen pumps and one water pump, and the electricity needed for 24-hour work, raising these two fish will cost 2000 yuan a month. A 2-meter-long, 80-cm-wide, 1 meter-high fish tank costs more than 7,000 yuan, and 2 tons of seawater in the fish tank costs 2,000 yuan. Coupled with the purchase of oxygen pumps, water pumps and other equipment, this is not a small investment. If there is no oxygen tank to replenish oxygen, you will die within an hour. Lemon sharks live in seawater. If the seawater quality drops, it will get sick, so it must be changed once a year. The price of high-quality sea salt is 100 yuan per bag, and 50 kilograms of sea water can be blended. So the price per ton of seawater is 1000 yuan.
laws and regulations
In china wildlife conservation association, a staff member said: "Sharks are not precious animals, so it is not illegal to keep sharks."
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Information or pictures of lemon sharks
Lemon shark
Features: yellow-brown body and yellow abdomen. It is named after the color similar to lemon and belongs to a medium-sized shark. The teeth are very sharp, the corners of the eyes are very small, and the body length can sometimes reach 3.4m m. They live in the flat sand and mangroves of lagoons. When they grow up, they will move into deep water about 400 meters deep. They feed on bony fish, shrimp, crabs and seabirds, and they are fierce and pose a certain threat to human beings.
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Similarity among mammals, reptiles, fish and birds
* * * Same as:
They are all vertebrates, and they are widely distributed. Except reptiles themselves, they all evolved from them.
Different:
Mammals and birds are warm-blooded animals, while fish and reptiles are warm-blooded animals.
Reptiles have homomorphic teeth, mammals have heteromorphic teeth, birds have no teeth, and fish's teeth are mostly homomorphic.
There is no difference between bird feces and urine.
Mammals are viviparous, and the rest are mostly oviparous (viviparous, such as lemon shark).
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