The ecological and economic harm caused by fish invasion is more obvious among all species. In order to prevent the Asian carp from entering the Great Lakes, the US government plans to spend $18 billion to build giant dikes and even send experts to China to study carp consumption. Besides carp, which other fish are on the list? Check out with the Sbike Encyclopedia of Flora and Fauna! (Top)
Note: The following invasive species were selected from the "List of the World's Top 100 Invasive Alien Species" maintained by the International Union for Conservation of Nature Species Survival Commission, Invasive Species Expert Group ISSG.
Brown trout
Brown trout: Estuarine soda type fish that can adapt to seawater, brackish and freshwater life. The shape and body shape change depending on the environment, and it is very varied. Many countries use it as a substitute for rainbow trout, and it has also been cultivated in the Yadong River in Tibet.
Introduced by aquaculture and spread around the world, it is used as a fishing recreation for tourism. It will greatly reduce the local native fish population, especially prey on or replace other salmon and food competition, develop into a dominant population in many parts of the world, resulting in invasion situations.
Mosquito fish
Mosquito fish: It is a small fish, has no edible value, is famous for eating mosquito larvae, and has certain ornamental value, and has been introduced to the mainland, and is currently distributed in many provinces and regions south of the Yangtze River. Because mosquito control can achieve the purpose of preventing and controlling infectious diseases such as malaria, it is widely introduced around the world.
Native to North America, it was introduced around the world to eradicate mosquitoes and eventually became harmful invasive fish. It feeds a large amount and has a strong reproductive capacity, while preying on mosquito larvae, it also devours a large number of eggs from native fish species, causing the extinction of native fish.
Snakehead
Snakehead: A famous river fresh fish favored by many diners on the mainland, it is low in fat and high in nutrition, and its protein content is higher than that of the four major freshwater fish in the mainland. It is delicious in meat and has 4 kinds of umami amino acids: aspartic acid, glutamic acid, alanine, glycine content is very high, which is the main reason for its delicious taste, especially suitable for nourishment.
Commonly known as the black fish, the black snakehead is a fierce carnivorous fish that eats a lot of food. It is amazingly fecund, sexually mature at the age of 2, mates five times a year, and lays more than 10,000 eggs at a time, which can be called a breeding machine. Its respiratory system is extremely strong and can survive for 3-4 days even if it leaves water. In 2019, the snakehead flooded the United States, and it was found everywhere in all major freshwater waters. In 2000, American tourists bought two to take home in Asia for viewing, and soon grew to 1 meter long, and then released into wild lakes, causing flooding.
Largemouth bass
Largemouth bass: fierce carnivorous fish, high-quality freshwater fish, worldwide game fishing, adaptability, fast growth, easy to catch, short breeding cycle, coupled with delicious and tender meat, no intermuscular spines, beautiful appearance, popular with diners, fishing enthusiasts and farmers. Smaller native fish species are preyed on at the place of introduction, becoming strong invasive species.
It has strong predation, large feed intake, wide adaptability to salinity, and can not only live in fresh water, but also live in brackish water with a salt content of less than 10‰. Males dig nests, are very territorial, attack invading fish, and guard eggs and juveniles.
Rainbow trout
Rainbow trout: A valuable edible fish in cold-temperate mountain rivers and streams, named for the beautiful rainbow-like horizontal stripes on the side of the body. The meat is tender, no fishy smell, no small bone spurs, and no need to shave when eating. The meat is bright red in color, sweet and delicious, can be called the "king of fish", raw food, smoked, good taste, very popular in the market.
Native to North America, it is a commercial high-quality aquatic product with high value sport fishing, and is one of the most widely introduced fish species around the world. Because it is a fierce carnivorous fish, strong feeding capacity, very active, and highly competitive, in many areas, there have been negative effects after introduction.
To be continued, the above is the bottom 7-11 rankings, and the top 6 will be launched later...
The above selection only represents the views of Sbike Encyclopedia of Animals and Plants, if there are omissions, please leave a message to supplement, and criticism and correction are welcome for deficiencies.
Note: This article is the original of Sbike Zodiac Animal and Plant Encyclopedia, please indicate the source for reprinting.