What are the effects and disadvantages of scavengers?

The dangers of scavengers

1. Destroy the aquatic ecological environment.

In addition to eating fish, scavenger fish also eat a large number of native aquatic plants, and spread diseases, destroy the nutritional structure and biological chain, thereby destroying the aquatic ecological environment.

2. Survive in large numbers.

Scavenger fish has a strong reproductive ability, breeding twice a year, can lay more than 2,000 eggs at a time, the survival rate is very high, fish eggs can become fry in about four days, even in the case of lack of water.

3. Cause the extinction of other fish.

Scavenger fish are native to Latin America, are exotic species, can easily grow and reproduce in water, and natural predators have not been found during farming, so no natural predators have been found. Once released, it feeds on other fish eggs, eating 3,000-5,000 eggs a day, leading to the extinction of other fish.

Introduction to Scavengers

The scavenger is named because he likes to eat the bait and dirt of the aquarium and purifies the water, so it is also known as the sucker fish, the suction catfish, the scientific name is the catfish, which is native to the rivers of South America and can often be seen in Central America.

The body of the fish is semi-cylindrical, the tail fin is shallow forked, it likes weak acidic soft water, the suitable water temperature is more than 2 0, the adult body length reaches 3 0 cm, can not overwinter naturally, and is active at the bottom of the water body. At first, it was welcomed by consumers and farmers because of its strong adaptability, easy feeding, omnivorous, low oxygen tolerance, high catch rate, etc.

The advantage of keeping a scavenger in a fish tank is that it can clean the fish tank, but the scavenger is an alien species, and after the fish are grown, there is no benefit, and it will cause alien invasion.

Keeping a scavenger in a fish tank doesn't actually play a role in cleaning the bathtub, in fact, scavenger is the name given by people, this fish belongs to an alien species, and there is no benefit.

The real name of the scavenger is multi-spoked winged catfish, the small scavenger fish is still very diligent, will go to eat some moss and algae, but when they grow up, it is different, become very lazy, and love to eat feed, eat meat, if there are other fish in the same tank sick or dead, they will gnaw the carcass overnight, or keep harassing the sick fish, causing them to be unable to rest, aggravating the disease.

Scavenger fish is an alien species, random release will bring great harm to the local area, resulting in no other fish in the river, said that the mountain town is the scavenger fish, because it is not good-looking, some people raised it for a while and threw it into the river, but they survived, because there are no natural enemies, so they reproduced, ate the eggs of the native fish, causing a species crisis.

In fact, these fish are suitable as scavengers because they are sucking algae and benthic animals, but they should not be polycultured with mild or small fish. If it reproduces in large numbers, it will devour the eggs of other fish, leading to the extinction of other fish.

The role of the scavenger: to clean the mucus on the tank wall, and to form algae without changing the water for a long time.

and other leftover food scraps for fish. Benefits of the scavenger: The fish of the scavenger contains proteins, fats, and a variety of minerals and amino acids.

But the content of these nutrients is not high, and scavenger fish.

There are also some bacteria in the meat, which are not suitable for human consumption, and even if they are consumed, there is no obvious benefit to the human body. <

1. The role of the scavenger: clean up the mucus on the tank wall, form algae and other food residues left over by fish without changing the water for a long time.

2. The effect of scavengers: Scavenger fish is native to Latin America.

It is an edible fish, its fish contains protein and fat, as well as a variety of minerals and amino acids, but the content of these nutrients is not high, and there are some bacteria in the scavenger fish, which is not suitable for human consumption, and even if it is eaten, there is no obvious benefit to the human body.

Scavengers are omnivorous fish that feed on moss, algae, benthic animals, fish eggs, fry, and garbage from the water.

1. Scavengers are nocturnal fish, which are often adsorbed on stones and glass in the aquarium to stabilize their bodies and suck algae, and also look for benthic animals such as water earthworms, which are the faithful "cleaners" in the aquarium.

2. The scavenger likes to eat feed, especially the heavy small particle feed, which is convenient for the suction cup to inhale, and for the small particle feed floating on the water surface, it will be sucked by the belly upside down to the water surface.

3. The scavenger's mouth is like a vacuum cleaner, sucking fish feces and green plants into the stomach. It also has a bubble in its mouth, which contains oxygen, so that it can be in the water for a longer period of time, so that it can eat more "food". The scavenger can still clean the walls of the fish tank.

The places it rubbed were exceptionally clean.

4. Scavengers take seaweed, bacteria, and feed as their main food, and will also eat a small amount of fish excrement, fish eggs, and fish fry when they are hungry.

Therefore, scavengers should not raise too much or too much, let alone release them, because if they are reproduced in large quantities, they will devour the eggs of other fish and lead to the extinction of other fish.

What are the functions of a scavenger? In fact, judging from the name of the scavenger, we can also guess one or two, that is, the scavenger has the function of cleaning. Let's take a look at the role of a scavenger in a bathtub, hoping to give beginners some reference meaning.

1. The biggest role of the scavenger is to clean up the mucus on the tank wall, and form algae and other food residues left over by fish without changing the water for a long time.

2. After cleaning up the debris, it is necessary to avoid the pollution of water quality by spoilage, otherwise it will affect the water quality, and frequent water changes will also affect the health of the fish.

3. However, whether the scavenger can play a good cleaning role depends on its body size, generally 5-15cm is more diligent, too small and insufficient power, too big will be very lazy, and more defecation.

4. If you want the scavenger to actively clean up, you must also let it develop the habit of not eating feed, so that it will work hard to "work" in order to feed itself.

A scavenger is another name for a variety of professions: a killer, a trailing centreback who takes on specific defensive tasks in football, a cleaner, an obstacle sweeper, a bounty hunter.

The scavenger's scientific name is the lower mouth catfish, which is native to the rivers of South America and was later introduced to China to breed in large numbers. His mouth can be attached to various places in the fish tank like a suction cup. It is a species of benthic fish.

The scavenger spends most of the day lying on the bottom of the tank or clinging to a corner of the tank, and at night he begins to move and eat, and is a nocturnal fish.

Because scavenger fish is a very omnivorous aquarium organism, whether it is algae, dead fish carcasses, moss, fish insects, as long as it can be eaten, it will not refuse to come, and eat them all. Therefore, it is also called "killer scavenger".

Because of these attributes of scavengers, a variety of professions are called "scavengers":

1. Killer. Calling the profession of "killer" a scavenger is a metaphor for the world. Killers are paid to carry out deadly attacks on a target or group of people (e.g., families, small groups).

This type of action may be a direct raid into the place where the vertical number of Qi marks are located, and a direct deadly attack.

2. A lagging central defender who undertakes a specific defensive task in a football game.

In the 8th World Football Championship in 1966, under the influence of the tactical idea of "sticking to the offensive steadily", in order to strengthen the defense, a player was arranged behind the back line.

3. Cleaners.

In the old days, the cleaners of the city were also called scavengers, because their job was to clean and collect garbage and send it to the designated collection point.

4. People who remove obstacles.

In the TV series "Detective Chinatown", the actor Lin Mo was a scavenger who walked behind the neon and noise of Bangkok, and walked between law and crime. The scavenger here mainly refers to the crime scene cleaning experts, and the main job is to erase the traces of the crime scene, cover up the evidence, and remove obstacles. The difference between them and the killer is that they only remove the corpse, not the **.

<>5. Bounty hunters.

The scavenger in the anime is a bounty hunter, which mainly refers to a person who earns bounties by hunting down criminals, protecting people, actively gathering intelligence, etc.

Harm to fish: Scavenger fish have a strong ability to eat moss when they are young, but when they are adults, they will no longer eat moss, and they will also have the habit of sucking fish. In addition, adult scavengers also like to eat fish roe, and some scavengers who have not had food for too long will eat small fish.

Harm to the environment: Scavengers are invasive alien species and have no natural predators in the wild in our country. If they are released into the wild, they will damage the local ecological environment.

1. Harm to fish: When the scavenger was young, he would eat the moss and algae in the fish tank, and he would also eat some food left by the fish. However, when they become adults, they will prefer meat and will have the habit of sucking fish.

If there are other fish in the tank who are injured, they will keep sucking the mucus from the other fish until the fish die. When a fish dies, the scavenger will quickly eat the corpses of the people in its bridge. In addition, the scavengers also like to eat fish eggs.

In very hungry cases, they will also eat smaller fish.

2. Harm to the environment: scavenger fish are invasive alien species, they have strong adaptability, and they are harmful to the environment, plus they have no natural enemies in our country, if accidentally released into the wild, it will seriously damage the local ecological environment.

If the scavenger doesn't want to raise it, you can choose to give it away, or you can ask the local aquarium if it's **. Under normal circumstances, aquariums are ** fish. If they can't be gifted, they can be killed.

It is important to note that scavengers cannot release them because they have no natural predators in the wild in our country, and if they are released into the wild, they will compete with the local fish for food and will eat the eggs of other fish. Moreover, their reproduction is relatively large, and if left unchecked, the native fish are likely to disappear.