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What kind of fish is the "scavenger" fish
"Scavenger" fish, also known as "garbage fish", "sucker fish", "anglerfish", etc., is the common name of some species of ray-finned fishes in the family Catfish, the most famous of which is the leopard fat catfish. The adult "scavenger" is about 30cm long, and the whole body is wrapped in rough bone plates, which has the function of defending against foreign enemies. "Scavenger" fish is benthic fish, requiring sufficient oxygen, alkaline slightly hard water, water temperature should be 22~26 °C.
The original story:
"Outside cleaners"
Native to South America, scavengers are omnivorous fish that feed on algae, benthic animals and water waste. In aquariums, it is often attached to stones, glass to stabilize the body and suck algae, but also to look for benthic animals (such as water earthworms). In aquariums, as long as the "scavenger" fish swim through, they are often sucked particularly clean, and aquarium enthusiasts introduce them to China as fish tank "cleaners".
Later stories:
"Invasion, from fish tanks to rivers and lakes"
In the beginning, these "scavenger" fish were just in the aquarium of aquarists, playing the role of "cleaners". However, they do not do their job well and cause other troubles.
"Underperforming" "scavenger" fish are released into rivers and lakes. However, at that time, everyone did not know much about the "scavenger" fish and did not know their danger.
So, the "scavenger" fish, which were inadvertently "banished" to natural waters, began their - eating other fish eggs and fry, disturbing other fish, making holes in the river embankment, and constantly multiplying; But no other animal can suppress them. Soon, the warm waters of the southern region became a paradise for "scavenger" fish.
The "seven hidden dangers" of "scavenger" fish
One: Cleaning the aquarium has limited effect
Adult fish eat a huge amount of food, can eat, and eat everything, so they excrete a lot of themselves. Compared to the little effect of cleaning the aquarium, it also causes a lot of dirt. It also likes to rip at aquatic plants and make a mess of the aquariums that enthusiasts have carefully arranged.
Two: Attacking other fish
"Scavenger" fish attack other fish in the aquarium, especially the colorful angelfish, and even attach themselves to their bodies and gnaw on their scales. "Scavenger" fish also roam at night and interfere with the survival of other fish. If other fish in the same body of water get sick, they will attach themselves to the body of the sick fish at night, nibbling on their wounds.
Third: often feed on the eggs of other fish
"Scavenger" fish grow fast and like to eat the eggs of other fish, eating 3,000 to 5,000 eggs a day, and can also swallow fry in large quantities. When feed, algae, fish eggs and fry are in front of them, "scavenger" fish present different preferences, food priorities: small fish and shrimp> meat scraps> feed > algae.
Fourth: The vitality is tenacious, and the risk of direct disposal is high
The "scavenger" fish are very tenacious and still have the ability to survive after a long time out of the water. After leaving the living environment and encountering water again, the "scavenger" fish still have the possibility of "turning over in water". Therefore, the best way to deal with the "scavenger" fish is to bury it deep to prevent it from invading natural waters again.
Fifth: Low economic value and few utilization channels
"Scavenger" fish bones are many and hard, less meat, heavy earthy smell, do not have much added value, can not tap more economic benefits, compared to its impact on ecological benefits, can be described as "harmful and not beneficial".
Sixth: Causing geological safety hazards
"Scavenger" fish have the habit of making holes to spawn, and the nest can be as deep as nearly 1 meter when spawning, and they will also gnaw the soil of the embankment, which has a greater impact on the embankment and may cause potential safety hazards.
Seventh: Destroying the ecological environment
The "scavenger" fish are found in the waters of their origin in South America and are preyed upon by animals such as otters and crocodiles, so they are still in ecological balance in local waters. But in continental waters there are no natural enemies. Therefore, if it is released into natural waters such as rivers, its super survival ability can easily bring about a large number of reproduction, each laying hundreds of fish eggs, or even up to 2,000 eggs, almost all of them can hatch into fish. They not only grab feed from native species, causing food resources to be strained, but also devour other eggs, ultimately threatening the survival of native fish and destroying the ecological chain.
Customs warmly reminds: "foreign pets", not pets!
1. Do not bring it into the country in violation of regulations
Outbound travel, no matter how new and beautiful the species, do not carry them back to China at will! Because its natural enemies, biological characteristics, pathogenic microorganisms, etc. are still unknown, the potential threat to the mainland ecological environment is great.
2. Do not release animals without authorization
When you decide not to keep a scavenger fish or other "exotic pets", you cannot release them at will. Perhaps an inadvertent release will form a "butterfly effect", like the "scavenger" fish in the text, causing irreparable and serious consequences.
3. Do not buy and sell in violation of regulations
In some flowers, birds, fish and insects markets, invasive alien species such as "scavenger" fish, alligator eels, Brazilian turtles, etc. can be found everywhere and can be bought at hand. Due to misunderstandings and misleading marketing, such transactions have been repeatedly prohibited. Pet lovers must have a good idea of "exotic pets" and avoid trading and trading.
Some images are from the Internet
Contributed by: Shenzhen Customs