Why do fish slowly appear in large puddles of water without fish at first?

The first ** is from the water source. Check to see if there are fish farms nearby, or if there are artificial lakes or natural rivers and lakes. In addition, some farmers like to raise some fish in their paddy fields, generally carp, grass carp, and crucian carp.

If it is a grass carp, it can also eat the weeds in the paddy field, and by the way, it also fertilizes the paddy field. When the fish grow up, they can not only keep some fresh meat for their own family, but also catch and sell it for money. However, if the water rises in the fields during the rainy season, or the weather is hot and there is a lack of oxygen in the water, the fish will jump out of the pond and run to other ponds, and gradually, there will be fish in the reservoir far away.

The second ** is brought by other creatures. There is a certain amount of chance in this. It's like a roof that was originally level, and no one has cleaned it up for a long time, and some flowers and plants will grow.

There are also small trees that grow on the roofs of people's houses, and no one will scatter seeds here, and most of the reasons why they can grow are caused by birds falling the seeds to the roof during migration.

Similarly, where there is water, there are many animals that are active, especially birds, which prefer to be close to water sources, and they like to eat small fish. Fish that have fish eggs on them, or fish eggs that stick to them, can also hatch when they fly to a pond in the mountains.

The third ** is that there are fish eggs in the soil or gravel when the fish pond is built. There is an old saying in the countryside, called "10000 years of grass seeds, 10,000 years of fish roe". It is an obvious exaggeration to say that grass seeds can live for thousands of years, and fish roe can live for tens of thousands of years, but it also shows that fish roe has a strong vitality.

In some soils, there was originally a flow of water, it may be a small river, it may be a stream, and these muds are likely to carry fish roe, and when they meet a suitable environment, the fish roe will grow into small fish. Or there are fish eggs in the droppings of waterfowl, so there are fish when there is water.

In fact, these fish may be the water in the pond itself with its own fish, the pond is generally made of self-soil, so as long as there have been fish in this place before, then these soil may contain fish roe, in ancient China there is an old saying called thousands of years of grass seeds, 10,000 years of fish roe, because there is a protective film on the outside of the fish roe, so that it can be protected from the interference of the external environment and the harm of natural enemies.

As a result, they can survive for a long time even in the soil, so the vitality of the roe is very tenacious. When the roe in the soil meets the water, and the temperature and humidity are suitable, the roe will naturally hatch into a fish.

Of course, some fish are more vigorous, they burrow into the soil when the water is about to dry up, and when the water is abundant, these fish will come out of the soil, but in our inherent impression that there were no fish in this place, so we feel that these fish appear out of thin air, but in fact they have been here for a long time.

The other is similar to the way many plants in nature survive and sow seeds. As we all know, plant seeds can be spread with the help of natural forces, such as wind, bees, butterflies, etc., but in fact, not only plants, some fish can also spread fertilized fish seeds into small ponds through these methods, for example, some water birds act as a medium for the spread of fish roe.

When the roe is dispersed into small ponds, and with suitable incubation conditions, the roe will hatch into small fish that will survive tenaciously in these ponds.

The fish that have been hatched will naturally breed naturally, and with the addition of fish, the fish manure it produces is a nutrient-rich fertilizer, so that many green plants, such as algae, can quickly catalyze the formation of the ecosystem in the pond, so in some small ponds, there will be an explosive increase in the number of fish, which is completely the magic of nature.

Of course, the small ponds or small pools we mentioned above are formed without human interference, and there is another situation that is more common in our daily life, that is, the pond is dug by hand.

In some places, pits need to be dug to store water, and the water drawn from these pits cannot be tap water, but only river water from other places, so there may be aquatic weeds and microorganisms in these waters, and fish roe may also be mixed in them, which greatly increases the possibility of fish entering the pond.

Therefore, under the right conditions, these fish roe will be hatched, so in some cases, even if there are no fry in the pond, fish can be found in the pond after a while.

So in any case, the fish in the pond certainly don't come out of nowhere, no matter how they enter the pond, they are fish roe at first, and then hatch into fish, but the process and method are different.

Therefore, some incomprehensible things we encounter in our daily life can often be explained by scientific truth, as long as we observe and **, we can find the mystery.

It's a well-known fact that fish live in water. ......There are fish living in rivers, lakes and seas.

Sometimes, however, in a large puddle where there are no fish, fish appear "out of thin air".

This is the case for several reasons:

Specifically, the fish in these puddles may have come to the puddle in the following ways:

1. Dormant fish eggs in the soil.

The vitality of fish eggs is very strong.

Eggs that are buried in the soil will be dormant if the environment is not suitable. ......And once the area becomes a puddle and the environment becomes suitable, the eggs will hatch and fish will appear in the puddle.

2. Fish or fish eggs from rivers, lakes and seas.

There are fish in the rivers, lakes and seas.

If the puddle is connected to a river, lake and sea, then when the water in the river, lake and sea flows into the puddle, fish or eggs may follow the current to the puddle, and fish will appear in the puddle.

3. Fish eggs brought by animals.

Some animals may have fish eggs stuck to them.

When these animals run into the puddle, they may bring their eggs into the puddle, and fish will appear in the puddle.

4. Fish eggs brought by the rain.

Rainwater, which is formed by the condensation of water vapor on the ground, does not seem likely to carry fish or fish eggs.

However, there is a wind ......Tornado ......The suction force of this wind is so strong that the water in the rivers, lakes and seas may be sucked directly into the sky, and the fish or fish eggs in the water will be carried away with ......These fish or eggs will fall to the ground with rainfall. ......If this rainwater enters the puddle, fish may appear.

The above possibilities are the reasons why fish appear in puddles where there are no fish in the first place.

First: Rush. In an area, there are always some water bodies that originally had crucian carp, as long as this is the case, when it rains heavily and there is heavy water, these water bodies that originally had crucian carp will be connected to other water bodies, and some crucian carp and fish eggs will be washed into the new water body, and as an omnivorous fish, as long as there are plants and microorganisms in the new water body, then the crucian carp will survive and reproduce.

Second: Belt. That is to say, some animals can carry the eggs of crucian carp to new bodies of water, and such animals can be divided into two main groups as a whole:

Birds and amphibians. Birds are waterfowl, waterfowl generally refers to all birds that are active near water, and the main food of this type of bird is in the water, mainly fish. When some birds catch fish, they will inevitably get some eggs on their bodies or claws, so when these birds reappear on a new body of water, they bring the eggs into a new environment, and there is crucian carp.

In addition to bands, birds excrete quickly, and when eating some fish with mature eggs, their excretory species also contain a certain amount of eggs, which happen to be discharged into a new body of water, also bringing fish.

Amphibians are mainly frogs that can carry their eggs, and when frogs enter other bodies of water from a body of water where crucian carp are present, they may carry some crucian carp eggs, which can also bring crucian carp to new bodies of water.

Third: put. Some people like to release animals, and fish is also one of the more common animals to be released, and the author found that in areas where fish are more concentrated, there will always be some people who catch fish with nets.

Some of the fish that have just been released are caught by these people, so some people will choose some wild water bodies to release the fish in order to prevent the released fish from being caught, so that the fish appear. Of course, release is good, but do not be blind, before release, it is best to understand the origin and habits of the animal, for example, many people like to release the Brazilian turtle, this behavior is actually not in the release, but in the killing, because the Brazilian turtle is not an original species in our country, they have no natural enemies in the wild, and will greatly reduce the local species (such as fish and other turtles and turtles).

Finally, I would like to share with you how to distinguish wild crucian carp from farmed crucian carp.

Crucian carp is a more popular fish, especially with it stewed soup, the soup is milky white, has high nutritional value, and wild crucian carp compared with farmed crucian carp, the meat quality is more delicate, less oil, the most important thing is that the ** of wild crucian carp is higher than that of farmed crucian carp, there are many unscrupulous traders who use farmed crucian carp as wild crucian carp to sell**, so it is more important to know how to distinguish wild crucian carp.

First of all, in terms of color, the body side of wild crucian carp is slightly yellow, with obvious metallic luster, and most of the low-score scales near the dorsal fin are darker, while the body side of farmed crucian carp is mostly silvery-white.

Secondly, farmed crucian carp usually have thicker flesh on the upper part of the body and a smaller belly, while wild crucian carp have a more uniform body. The most important thing is that most of the crucian carp are relatively small in size, so they are usually sold together with multiple crucian carp, and if it is found that the individual differences of crucian carp are not large, most of them are farmed, after all, most of the fish fry are fed in the same batch.

There are several reasons why a puddle naturally has fish:

1. Some fish eggs can survive in the soil for many years, and they will hatch into fish under suitable conditions.

2. Unintentionally brought in artificially (such as nets stained with fish eggs to catch fish lice, fish washing utensils, aquatic weeds flushed and erected, etc.).

3. After some birds eat fish, the fish roe cannot be digested, and they are discharged with feces, and are washed to ponds or puddles by rainwater to hatch small fish.

Fishes are ectothermic aquatic vertebrates that swim and feed on the upper and lower jaws by the oscillation of the tail and trunk, by the gill of the gill and the coordination of the fins, and belong to the vertebrate subphylum of the phylum Chordates. There are about 32,000 species of fish found in the world, and the fish are distributed in the ocean and freshwater, with two-thirds of them living in the ocean cover and the rest living in freshwater. The ** of fish is composed of epidermis and dermis, the epidermis is very thin, composed of several layers of epithelial cells and germinal layers, the mucus glands rich in single cells in the epidermis can continuously secrete sticky and slippery fluid, so that the body surface forms a mucus layer, lubricates and protects the large fish body, such as reducing the friction resistance of **; Improves athletic capacity; Removes bacteria and dirt that adhere to the fish's body.

At the same time, it makes the body surface slippery and easy to escape from enemies. Therefore, the epidermis is of great significance for the life and survival of fish.

In fact, we often encounter such a situation, that is, it was originally a wild puddle, it rained a little, accumulated a little water, and then after a while, there were many small fish in it, and many people said that these fish were made of grass seeds, and some said that they were grasshoppers.

become, these claims have no scientific basis, and they are obviously unreliable. The fish in the wild puddle may actually come from these aspects. <>

1. There are fish eggs in the mud inside the puddle.

The most likely thing is that there were fish eggs on the soil in the puddle, and when there was no water, the eggs were buried in the soil and could not hatch. When it rains or people get water into the puddles, the eggs will slowly hatch and grow into small fish.

2. Waterfowl. Or the beast.

Bring fish eggs.

We know that many animals and waterfowl need to drink from the puddles, and when they drink water, their paws and beaks sometimes get some fish eggs, and then they go to these wild watering holes and bring the eggs to the watering holes. There are also water birds and wild beasts that eat some fish and aquatic plants, which are likely to have fish eggs in them, and when they excrete the undigested fish eggs in this puddle, the fish eggs hatch and there are fish in the puddle. <>

3. The rain brought fish eggs and fish.

If it rains heavily, the rain will bring water from other places into this puddle, and the fish and eggs in these waters will reach this wild puddle, and there will be fish.

A puddle will not have fish for no reason, there are always these reasons, all say "thousands of years of grass seeds, 10,000 years of fish larvae", it is enough to see how strong the vitality of fish eggs is, in the soil, in the body of the beast, it is not easy to lose vitality, as long as it reaches the right environment, the right temperature, they will begin to hatch, and the fish in the wild puddle are not out of thin air, they are hatched from fish eggs. As long as there is a suitable environment, there will definitely be a suitable species, which can be regarded as a natural law.

Finish. <>