"Asian carp" eats everything and can eat aquatic plants and plankton equivalent to 40% of its own weight every day. Some of them can be as long as 4 feet (about 1.2 meters) and weigh as much as 100 pounds (about 45.4 kilograms). These invasive "Asian carp" compete with primitive fish for food and space, posing a threat to the American ecosystem.
According to an earlier study, Asian carp are flooding in the United States, the most representative of which is the St. Daski River in Ohio and a tributary of Lake Erie. Some data are even more sensational: in some rivers in the United States, the number of Asian carp has accounted for 90% of the total number of fish.
American scientists believe that Asian carp grow rapidly and are huge, and there are almost no natural enemies and competitors in the Great Lakes. They not only eat all the food that local fish depend on, but also breed rapidly, which is likely to destroy the ecological balance of the lake area and even bring disaster to other biological populations in the lake, such as salmon.
This has caused panic among many Americans. Once these fish enter the Great Lakes region, the main fish producing area in the United States, the salmon fishing that fishermen depend on will be greatly affected, resulting in unpredictable losses. Once Asian carp flows into the Mississippi River, which almost runs through the United States, 3 1 state will be affected.
In official website, the U.S. Department of Agriculture even reminded U.S. citizens not to hold live Asian carp and not to carry the fish across the state. Even dead Asian carp should not be thrown into new waters.
"Some Asian carp have successfully migrated to some larger rivers and lakes, such as the Illinois River in Illinois." Asian carp were found in the Mississippi River. Although there is no evidence of large-scale invasion, the ecosystem of the Mississippi River basin is facing increasing threats. "
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