How does arowana breed?
Arowana is one of the few surviving ancient fish. Arowana belongs to the family Ossioglossidae, which existed as early as the Carboniferous period 290 million years ago. Later, the movement of the earth's crust gradually distributed arowana to all continents in the world, and now it is mainly distributed in Oceania, South America and Asia. Arowana belongs to the family Osteoglossidae, and there are several strains with different shapes, among which arowana and arowana are rare. Arowana is native to Malaysia. Arowana is mainly produced in Indonesia, as well as Xinglong (Pearl Dragon) produced in Australia and Yinlong and Black Dragon produced in Amazon River in South America.
Arowana can live about 18 years, and their growth and maturity take a long time. Generally, it takes 6-65,438+02 years for females and 5-65,438+06 years for males to reproduce. In nature, arowana will hatch eggs in its mouth when it breeds. After hatching, the male will look after the young. When the enemy attacks or is frightened, arowana will hold the larvae in its mouth until the danger is over. This will continue until the larvae can feed themselves. At present, the main varieties of arowana cultured in the aquarium are silver dragon, red dragon, Qinglong, Australian arowana and so on.
Before spawning, the two arowanas began to stop eating, and the abdomen of the female fish began to increase a lot. At this time, arowana sometimes sticks its tail tightly together, or lies close to each other's back. Sometimes the environment changes, arowana is frightened and even eats all its eggs. Arowana spawning in an aquarium is definitely different from spawning in a natural river.
The aquarium should be kept in a quiet environment, using lights, around 8: 00-2 1: 00. The spawning time is during the day. The eggs laid by arowana are orange, with a diameter of 12- 15mm, and fall off the fish like a marble with dazzling golden light. Not much eggs are laid, and even fewer hatch.
Arowana is a kind of oral fish. After the female fish lays eggs, the male fish immediately puts them into the population, and 1 time the male fish can contain about 40-50 eggs a day. The female lays eggs, but the male can't hold so many. Female fish will immediately feel these eggs and start swallowing them into the population, which is why arowana hatches so few young fish.
When the female fish thinks that the male fish can't hold so many eggs, she will swallow the eggs in her mouth, which will protect the fish eggs for a few hours or so, and then she will eat the eggs in her stomach. After the male fish put the eggs in his mouth, his mouth often twists or shakes the faucet to balance his body. At this time, the female fish acts as a guard, and it spreads its pectoral fins horizontally to form a unique defensive posture.
Arowana is the female fish laying eggs, the male fish hatching and the female fish defending. In about 60 days, the larvae will start to run in and out of the male's mouth, about 5-6 cm. This movement in and out will last from about 60 days after delivery to about 90 days. This kind of breeding, arowana stopped eating for too long, and its physical strength was too high, which did great harm to arowana, but some arowana could not recover and died. At present, China still depends on imports. In the natural waters of South America, a large number of sexually mature arowana nest and hatch arowana at the bottom of the river, and the number is very large.
What's the point of raising arowana?
First, the feng shui function of arowana
1, Arowana Wang Cai generally believes that the golden dragon, the red dragon and the blue dragon in the three meanings of Taoyuan represent Liu Bei, Guan Yu and Zhang Fei respectively. Because Guan Yu is considered to be the Lu of Fu Lushou, the Red Dragon is also considered to have the function of making a fortune and prospering the family. But Guan Yu is also a warrior, so the red dragon also has a strong ShaQi, and some people who are in poor health or older are easily injured by ShaQi.
2, arowana healthy and longevity Jinlong is considered to be Liu Bei, Liu Bei is the blessing of Fu Lushou, and raising Jinlong can be said to be a blessing. The dragon is Zhang Fei, and Zhang Fei is longevity. If you want to live a long life, you can keep a dragon. Moreover, arowana has always had the function of blocking evil spirits and eliminating disasters, and it can bring good luck at home.
3, arowana five elements respectively, each of us has the difference of five elements, and the home also has the orientation of five elements. Among the varieties of arowana, golden dragon and black dragon represent water, golden dragon and silver dragon represent gold, red-tailed golden dragon represents earth, blood red dragon represents fire, and pearl dragon represents wood. You can use the five-element pendulum method to cultivate arowana according to your own needs.
Second, the placement position of arowana fish tank
1, the theory of five elements generating grams According to the theory of five elements generating grams, according to the properties of water, the most unsuitable places to put earth water, aquatic grams and fish tanks are the middle and south, so putting them in these two positions will suppress the owner's fortune.
2. Different orientations have different functions, except for the three remaining positions in the south, which are suitable for putting fish tanks. Placement in the north can increase career opportunities, placement in the west can increase future generations, and placement in the east will make the owner healthy.
It is appropriate to put the fish tank next to the gate. Another suitable place to put it is next to the gate. The door is the channel to communicate the inner boundary of the house with the outside world, that is, the tuyere in Feng Shui, which is more important than the window.
4. Avoid putting arowana beside the bed. Avoid putting arowana beside the bed. For taking a shower, the owner has poor fortune, bad spirit and is prone to headaches. At the same time, it is not appropriate to put a fish tank at the end of the bed, because it is a sin to cut your feet and fit your shoes, and the owner's fortune is not good, and it is futile and hard to run around.
Third, the precautions for raising arowana Feng Shui
1, according to those birthday people who are short of water, putting fish tanks in the living room will be of great help to their luck; But people who avoid water, if they raise fish in the living room, are not suitable and are prone to bad luck.
How does arowana distinguish between males and females?
1. The heads of male and female arowanas are different. The female fish's gill has an A, and the tip is shorter than that of the male fish. However, the A word of the male fish is not regular and has a long tip. In addition, the head of the female fish is relatively small, and the head of the male fish is relatively large because it contains fish eggs.
2. Male arowana of the same age is longer than female. Generally speaking, the size of dragon tanks raised at home is 180*60*90. In this environment, there is no obvious difference in the growth rate between female fish and male fish around 20cm, but the growth rate of female fish around 35cm will obviously slow down.
3. For backcrossing arowana, the backcrossing speed of male fish is faster, and the backcrossing degree of female fish is not as great as that of male fish. Generally speaking, six rows of bright backs are almost all male fish.
4. Nearly 80% of male fish scales are golden, and 80% of pearl scales are bright, which is what we usually call "golden individuals"; Female fish are usually "blue individuals", and about 50% of the beads are bright.