The moment Zhang Zi'an opened the door, Wang Gan, Li Kun and Jiang Feifei also arrived, and several people shouted in unison: "Don't move!"

A group of little kids were taken aback, and the grandson of Wu Electrician shuddered and pulled his hand out of the fish tank.

"You...... Who are you??

Several other little kids also chimed in: "If you don't leave, we'll call someone!"

Zhang Zi'an ignored them, his eyes looked over their bodies and at the fish tank.

It may be that the little children took turns reaching in to muddy the water, and the fish tank was muddy, like looking at flowers in the fog and the moon in the water, and only the outline of the reef could be dimly distinguished.

When these little children saw Zhang Zi'an and they didn't leave, some people were grinning and crying, some wanted to call for help, and some people were at a loss.

Fortunately, the two old men, Wu Electrician and Zhao Welder, climbed upstairs with a snort, and the little children immediately had a backbone, and they hugged around to complain.

"Grandpa! The thief has broken into our house, call the police!"

"Grandpa Wu ~ Woo woo ~ "

"Grandpa Zhao, I'm scared...... I want mom!"

The house was in chaos, and the neighbor next door heard the noise and went out to inspect the situation, but was repeatedly apologized by Wu electrician and Zhao welder and persuaded to go back.

When Wu electrician and Zhao welder saw that the children were intact, their hearts finally retracted into their stomachs. They were old, and they went up to the sixth floor in one breath, without a break in between, and they couldn't breathe for a long time, looking at the noisy children with love and hate.

Zhao welder usually has to go up and down the sixth floor, and his physical strength is better than that of Wu electrician, so he took the lead in gasping and asked, "What's the ...... What kind of thing in the water...... Is there any movement?"

Zhang Zi'an had already approached the fish tank with vigilance.

He glanced at the window quickly and said, "The Bobbit Worm usually comes out of the day at night, but now it's daytime, and the sun is strong, so it should hide in its hiding place to rest, and it won't come out under normal circumstances...... However, now that it is disturbed by the children, I am not sure if it will ......."

After a while, the sand and dust stirred up in the tank had gradually settled, and visibility had recovered somewhat.

Before Zhang Zi'an could finish speaking, a black-brown shadow rolled up the mud and sand, jumped out from between the reefs like a spring, snapped into a small fish passing by, and retracted it with great speed.

Most of the adults present saw this scene and were stunned.

"Grandpa, what's that?"

A few of the children also saw it and asked in a frightened voice.

Zhang Zi'an is closest to the fish tank, and he can see it most clearly, that thing has five tentacles on the top of its head, its arthropod-like body is oily and slippery, its strong mouthparts are like a pair of steel tongs, and its bite force is extremely fierce, what else can it be if it is not a bobbit worm?

After witnessing it with his own eyes, the composure that Zhao welder had pretended to be before disappeared, and his back was crispy and numb like electricity, and he knew that it was all cold sweat without touching it.

"it!"

Electrician Wu scolded, and picked up the bench next to him to throw it over.

"Old Wu!

Zhao welder was so distressed that he hurriedly grabbed Wu electrician.

It took him several days to find five pieces of glass of the right size to cut and glue this large fish tank, and he didn't know how many mistakes there were in the process, and he was reluctant to smash it.

Zhang Zi'an also stopped Wu Electrician, because the bobbit worm had already retracted into the reef, and even if he smashed the fish tank, it would not help, but would let it escape from the fish tank. When the time comes, it will run around the house, catching and biting whom, what should it do?

Electrician Wu was so angry that his lips trembled, and he couldn't wait to break the worm into pieces.

"Old Zhao, explain it to me! How did you get this strange worm in?" he scolded by pointing at the nose of the welder Zhao with a fierce voice, and the friendship boat that had drifted for decades was about to capsize.

"This ...... How do I know! If I knew, I would be able to put it in?" Even if he wanted to raise his children roughly, it was impossible for them to come into close contact with such a dangerous animal.

What he said was the truth, but Electrician Wu was dizzy.

Zhang Zi'an had already guessed the truth of the matter, and explained for Zhao Welder: "Master Wu, don't worry, isn't there no accident? I already know what's going on. ”

"What's going on?" said Zhao Welder, too.

"The problem is the reef you chiseled back from the sea. Zhang Zi'an stared at the reef and said, "It's okay to chisel the reef back as living rocks, but did you disinfect the reefs before they were put into the tank?"

"Disinfection?" Zhao welder thought for a moment, "I saw that this reef was quite clean, so I only took the water pipe and connected it to the faucet to wash the reef again." ”

"No, here's the problem - whether it's a reef or a live rock, you have to rinse it with boiling water after you get it, and it's better to rinse it several times, otherwise there may be some unexpected living organisms or eggs hidden in the pores and brought into your fish tank. Zhang Zi'an explained, "Sand silkworms and bobbit worms are all smugglers who get in this way. ”

Then, he added: "Of course, some veteran veterans who play aquarium like surprises, they deliberately do not disinfect the living stones, especially the living stones from abroad, and wait to see what kind of stowaways will grow out of the gaps in the living stones after a while, among which there may be unexpected rare creatures, but you ...... Obviously not such veterans, and even these veterans, they are prepared to do so. ”

This bobbit worm, similar to the ugly duckling coral, is a stowaway attached to a living rock, which is not uncommon in the aquarium biosphere.

The regular procedure is to disinfect the living stone with boiling water before it is put into the tank, but some veterans deliberately do the opposite and try to gamble.

Zhang Zi'an spent money to buy the ugly coral back, which is also a kind of gambling.

Small gambling is pleasant, big gambling hurts the body, just like the saying - win the tender model of the club, lose and work in the sea!

In general aquariums, because customers are afraid that they will not know this procedure, they often disinfect the live stones in advance before selling them to customers.

But Zhao welder went to the beach to dig the reef by himself, and he didn't know that he had to disinfect it, and it happened that there was a juvenile bobbit bug hidden in one of the reefs, so something happened.

This bobbit worm is well versed in the Taizu strategy of "digging deep holes, accumulating grain, and not pretending to be forced", and has been keeping a low profile in the fish tank, feeding on small fish, shrimp and sand silkworms, and the longer it grows, the bigger it gets. The key is that its body can hide in the bottom sand and reefs, and it can lie dormant at night, and it will not be detected when it is idle.

So then, it's a question of how to kill it.