The results of the investigation into the bizarre disappearance of 800 ornamental fish in the aquarium are surprising. 2.

Yesterday, we talked about the inexplicable disappearance of hundreds of fish in Shenzhen Aquarium, but the cause has not yet been identified, and the final result is astonishing!

Blacktip shark is the overlord of Shenzhen Sea World, with a strong aggressiveness, such heavyweight sharks are injured and killed. Zhou Yunxin believes that there must be a more ferocious killer hidden in the shark pond: a ferocious blacktip shark has been bitten to half its body, which cannot be left unchecked. What's more, in this pool, SeaWorld has a show where staff perform with sharks: during the performance, the staff go down with bait to feed the sharks and swim with them. If there are such ferocious sharks in the pond, the safety of the staff can never be guaranteed. Zhou Yunxin's first reaction is to protect the personal safety of employees.

Because the staff did not see which fish first attacked the blacktip shark, this made Zhou Yunxin even more worried: wave after wave, wave after wave. But she is convinced that a large number of missing ornamental fish must have something to do with the blacktip shark murder. It can not be ruled out that sharks swallowed these ornamental fish, but there is no way to determine which kind or which shark swallowed these ornamental fish.

Zhou Yunxin immediately stopped the human shark dance performance and changed the underwater feeding to the surface feeding. The focus of the work is to find out the culprit that killed the blacktip shark. She invited experts to identify the remains of blacktip sharks, hoping to find out from the traces of teeth. But it is impossible to tell: because there are too many tooth marks on that half of the blacktip shark, including nurse shark, leopard shark and grouper, it seems that they all scramble for the injured blacktip shark. Since it is impossible to determine who is responsible for killing the blacktip shark, the identification work has reached an impasse.

Zhou Yunxin discussed with the staff: pay attention to the movement of each fish in the shark pond, and from the posture of their swimming and the shape of their teeth, we all look for more ferocious sharks that think it is possible to attack the blacktip shark first. or other fish. Isolate the more aggressive lemon sharks, whitetip sharks and two grouper, temporarily divide them into two parts with a net, and let these fish live here; let sharks, nurse sharks and leopard sharks, which are considered to be more docile, live in another part of the pool.

After the four fish were quarantined, Zhou Yunxin tried to put ornamental fish into the shark pond, and sure enough, there was no more mass disappearance. She locked her eyes in the quarantine area, hoping to find the real killer.

A month later, Zhou Yunxin found that the white tip shark had changed greatly: it grew bigger and bigger, was more than twice the size of the shark in the docile area here, and gained a lot of weight. Zhou Yunxin felt that this shark was not like a Baiji shark, so she looked up the relevant information: this shark was bought together with other whitetip sharks when the Shenzhen Ocean World Museum was built, and it is usually more active than similar sharks. Zhou Yunxin suspected that the shark was the most ferocious killer.

Aquarium mystery: the shark pond suffered heavy losses but the cause is difficult to identify, and the complicated and confusing investigation has begun.

Without data to prove it, Zhou Yunxin can only continue to observe. Two months later, she found that all four quarantined fish had changed greatly, except that this whitetip shark was more obvious. After consideration, she extended the killer to the four fish. Because they are more ferocious and active, the staff also gradually increase the amount of their food. Maybe because of the increase in food intake, only four sharks grow fast in this environment, or they may have reached the age of rapid growth.

The real culprit is still unknown. But as time went by, Zhou Yunxin once again listed the whitetip shark as a key suspect. She saw that this whitetip shark is less and less like a whitetip shark, and its shape is very different from that of a real whitetip shark: when a real whitetip shark grows to more than one meter long, it basically grows no longer, while this whitetip shark and another ferocious lemon shark grow almost two meters faster, which is completely different from the shape of other whitetip sharks. She is almost sure that it is not a whitetip shark, but she is not sure what kind of shark it belongs to.

The identity of the shark has become an inextricable mystery for Zhou Yunxin, who can only continue to feed it in isolation. Not long ago, when the curator of Hong Kong Ocean Park visited here, Zhou Yunxin finally found the answer. That day, when Zhou Yunxin visited the ferocious area of the aquarium with him, he was very surprised and asked Zhou Yunxin: how could you raise bull sharks in your museum? As soon as Zhou Yunxin heard this, he immediately responded: it turned out that we had never found the answer and could not be sure that the shark of the species was the bull shark.

In order to understand the habits of bull sharks, Zhou Yunxin looked through a lot of materials and consulted foreign marine experts, only to know that bull sharks are a rare oceanic shark that can survive in fresh water. The endocrine system of the bull shark is different from that of other sharks. It behaves differently during different growth periods or when it enters different waters. After the bull shark enters the fresh water, its endocrine has made some adjustments, so the temperament becomes extremely fierce. Bull sharks can go to the rivers of the Ganges in India and the Gulf of Mexico, or even go against the current to rivers of more than 4000 kilometers. People there are unguarded against it, because in the concept of ordinary people, there are no sharks in the Tamsui River, so it can cause more harm to human beings than the well-known great white shark. According to the characteristics of bull sharks, Zhou Yunxin also found out why a large number of ornamental fish suddenly disappeared and why blacktip sharks were fatal.

For the safety of the staff, few aquariums in various countries feed cattle sharks, and some people in Shenzhen SeaWorld suggested putting the shark back to the sea, but Zhou Yunxin objected: it's like a tiger kept in a zoo for 10 years. If you put it in the forest, it may not even have the ability to survive. So for it, it is inhumane to release it to the sea.

In order to let more visitors know and understand the bull shark, Zhou Yunxin continues to feed it in the quarantine area and keep lemon sharks of similar size and competitive attack performance as companions. Shenzhen SeaWorld has regained its former serenity.

This is the result I haven't seen for a long time. Thank you for your attention.

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