What is Ruffe?
Ruffe, whose scientific name is Gymnocephalus Cernus , is the fish of the Percidae family, which comes from Europe and North Asia. Since it was introduced sometime at the age of 80, it has become a problematic invasive species in North America. Since then, efforts to remove fish from lakes and rivers of Canada and the United States have been underway. Fish are usually brownish gray with dark spots covering most of the body and remarkable physical properties include its long dorsal fins that are connected together. Fish are usually seen in deeper waters during the day of the day and at night they feed on, they move to shallower waters and rivers. The fish primarily feed on fish eggs.
No one knows exactly how this fish has become an invasive species. He was most likely to be released in the discharged ballast water of Transoanian ships. At first it appeared in Lake Superior, but since then it has been observed in Jezera Huron and Lake Michigan. It was also seen in the surrounding rivers.
Ruffe has become a dangerous invasive species because it competes against other fish of large lakes for food. Studies conducted by environmental agencies have found that areas with high fish populations have a reduced population of native fish such as yellow perch and emerald shiners. However, its population was somewhat under control of larger fish, such as the bulls and bass of Smallmouth, which feeds on Ruffe.
both state and federal government agencies are working on the control of Ruffe's population before it gets to a dangerous level. Fishermen in Wisconsin are instructions to kill it and freeze all Ruffe that catches and report the catch to local government agencies.
Control measures that help to combat the spread of Ruffe include the use of pheromones to attract and capture fish. Alarm pheromones are also used. These special pheromones may affect fish behavior and prevent it from migrating to areas where it has not yet spread.
ruFFE is classified as a forbidden invasive species. It is therefore illegal to import, transport or even have live. As a result, they are not seen on aquariums or fish markets.