My Deep-sea Fishery

After research, biologists found that the fiddler crab will use its small pincers to scrape small particles on the surface of the silt and send them into the mouth, and those small particles have been scientifically tested and found to contain many nutrients rich in nutrients. Detritus, algae, bacteria and other microorganisms have a lot of nutrients and can meet the nutritional needs of many organisms.

Of course, no matter how good the nutrition of the soil is, it would be useless to not be able to absorb it.

Most organisms devour the soil and cannot absorb any nutrients in the soil. Fiddler crabs can get full by eating only the soil, which is definitely a miracle in the history of biology.

Xiang Yang twisted up the fiddler crab and put it in front of his eyes for a closer look. He found that this fiddler crab not only has special pliers, special eyes, but also a very special mouth. It doesn't look like a crab's mouth, but it is similar to Boston A lobster's mouth is somewhat similar.

In fact, the structure inside the fiddler crab's mouth is even more special.

In the mouth of the fiddler crab, there is a very special organ, which can sort and filter the food eaten. The nutritious part is eaten into the stomach, and the useless residue is taken out by small pliers and discarded on the ground. In this way, many small soil balls can often be seen in places where fiddler crabs appear.

Many people mistakenly think that those small soil balls are the excrement of fiddler crabs. In fact, the real name of these small soil balls is "pseudo-dung", which are real barren soil sacs without any fertilizer.

Xiang Yang stared at the fiddler crab carefully, then smiled and threw it into the net pocket.

Although this fiddler crab is small in size, just over a point or two, it is not the right size for a meat crab.

But this fiddler crab has rich colors and eye-catching tide-calling movements. If it is placed in a sea tank, it is of great ornamental value. It has very high ornamental value.

Of course, only male fiddler crabs wield their large pincers for all sorts of ostentatious displays, and female fiddler crabs have very small pincers.

Male fiddler crabs wield their big claws and perform all kinds of ostentatious performances, of course not to summon the tide, but similar to peacocks opening their tails to attract the opposite sex.

Of course.

The large claws, which account for more than half of the total body volume, are not only good-looking, but also have the function of repelling powerful enemies and defending the territory.

If you encounter a truly invincible enemy, it is still a good magic weapon for fiddler crabs to shed their shells. When hunters see tongs that are bigger than the shells of fiddler crabs, they will of course choose tongs, and fiddler crabs can borrow them. machine to escape.

The fiddler crab has a strong regeneration function. When its large pincers fall off, a new one can quickly grow out.

After putting the fiddler crab into the net bag, Xiang Yang continued to search for other valuable seafood on the seabed.

Although fiddler crabs have a strong ornamental value, Xiang Yang has no intention of searching for fiddler crabs.

Fiddler crabs like to live in caves. Although they can dive to the bottom of the sea, they actually need oxygen to breathe. Xiang Yang was surprised to find a fiddler crab on the bottom of the sea. Generally, fiddler crabs like to live On the coast.

When the sea tide is high, the fiddler crab will even block the door of its own house with a cloud of mud.

If it was on the shore, Xiang Yang might not be able to catch this fiddler crab.

Although the short-legged fiddler crab doesn't swim fast, it runs very fast. Although it is also a master of sideways walking, it is a famous sprinter. When it sprints, it is simply a small off-road vehicle with eight drivers. The sprint of a fiddler crab can only last a few seconds.

Xiang Yang deftly crossed a coral reef and was about to continue swimming.

Suddenly, Xiang Yang's eyes were fixed, and he stared suspiciously at a group of small black and white fish swimming in the coral reef ahead.

I saw that the group of fish had a light body like a flying swallow, and the color of their bodies was perfectly blended with black and white, and the slender fins made the group of fish have an air of otherworldly fireworks.

It turned out to be a Pearl Swallow. Xiang Yang was a little puzzled, how could there be a pearl swallow in the South China Sea.

When it comes to pearl swallows, not many people may know what kind of fish it is.

But if you say another name of Pearl Feiyan, most of them must know it.

Another name of Pearl Swallow is Surabaya Rose, which is known as the eternal black and white classic.

Pearl swallow is a small tropical seawater fish, which is only about seven centimeters even if it grows to an adult. It generally feeds on plankton and is the most traded seawater fish in the aquarium trade market.

Pearl swallow not only has a nice name, but also has a beautiful appearance. When swimming in the sea, it looks like a flying swallow. It also likes to live in groups. It is one of the few seawater ornamental fish that can swim in groups in the aquarium. .

Because of its good-looking appearance and the characteristics of living in groups, the pearl swallow has become a popular seawater ornamental fish all over the world, and is favored by aquarium enthusiasts all over the world, which has also triggered a large-scale aquarium trade.

Since 1995, the pearl swallow first appeared in the international aquarium trade. Only five years later, in 2000, nearly 700,000 Surabaya roses were exported from Indonesia to other countries. 900,000 pearl swallows were fished from Indonesian waters.

The overfishing caused by the large-scale aquarium trade has led to the near extinction of the pearl swallow.

Hell Island, once the largest habitat of pearl swallows, can no longer find any pearl swallows.

Since its discovery, in just 20 years, the wild Surabaya rose, a beautiful fish, is almost endangered, and it has been included in the iucn red list, which is a critically endangered species.

Xiang Yang's figure flashed, and he appeared among the group of pearl swallows.

"The origin of pearl swallows is very narrow. These pearl swallows should not be native to this sea area. They may have been released by tourists." Xiang Yang thought inwardly.

The Xisha Islands are one of the most popular sea areas for Chinese tourists who go out to sea by yacht. It is not surprising that there will be tourists Xiang Yang.

It is not surprising that someone will release the pearl flying swallow Xiang Yang. Tourists who can come here by yacht must have a lot of economic strength.

It's just that this kind of person is not actually doing good deeds. Species invasion is actually a very serious matter.

In Songshan Lake, many tourists released scavengers and turtles into it. These two creatures are simply mobile fish egg cleaning machines, and their reproductive capacity is extremely strong, which brought a devastating disaster to the fish that originally lived in Songshan Lake. , In order to clean up the turtles and scavengers released by tourists from the lake, in 2019, the managers of the lake area spent millions of dollars.

In Longcheng's Chengxi Reservoir, a snapping turtle was once released by someone, and at that time, the whole city was even more troubled.