Carp have established in Australian waters as they can survive a range of environmental conditions which native fish find difficult to cope with. Their feeding habits have result in muddied water and uprooted aquatic plants. Less light can penetrate muddy water resulting in reduced plant matter and oxygen levels. This degrades the quality of the water making it more difficult for other species to survive.
Strategies are being developed to control and reduce the number of carp in Australian waters. Fish poisons have been used to eradicate carp in ponds and small dams, but are not practical for rivers and streams as these poisons also kill native fish. Biological control methods, such as manipulating the genetic structure of carp to disrupt their breeding or bring an early death, are being investigated. Intensive fishing may have the potential to reduce carp numbers in small enclosed waterbodies, but it is very unlikely that fishing alone is an effective long term control measure.
|Author||Department of Primary Industries and Fisheries, QLD|
|Publisher||Department of Primary Industries and Fisheries, QL|