The City of Playford has declared a war on the noxious pest fish, European carp. ^^ City of Playford staff removed more than 15,000 European carp from local waterways last month. Photos: Rob McLean Last month the City of Playford's water management teams carefully removed more than 15,000 European carp from three local man-made waterways.
Between 8000 and 10,000 smaller fish and 20 larger fish were removed from the Stebonheath Curtis Wetland Capture basin, while 500 larger fish were removed from Andrews Farm Wetland.
A further 5000 smaller fish and 60 larger fish were removed from the North Lakes Golf Course.
City of Playford Mayor Glenn Docherty said the response is due to the unwitting introduction of the freshwater pest into our pristine wetlands over several years.
“It’s really important that our wetlands are protected,” Mayor Docherty said.
“We need to send a message out to the community not to fish in them, go yabbying and definitely not to dump introduced species.”
Known for their bottom-feeding habits, carp grow up to around seven or eight kilograms and stir up sediments and effectively ‘muddy the waters'.
“Council is determined to continue eradicating the pest in the most natural way – namely a proven natural solution stemming from the root of a tropical plant,” Mayor Docherty said.
Council used the plant extract rotenone – an odourless, colourless substance with a negligible environmental impact.
Rotenone does not effect non-targeted aquatic species such as yabbies, turtles, ducks and birds.
“In three previous campaigns, Playford’s water management teams removed more than 26,000 carp from our wetlands,” Mayor Docherty said. Read: WHAT IS ROTENONE?
These wetlands are crucial to harvesting storm water from the Smith Creek catchment.
The water is then stored in aquifers before being used to irrigate Council’s sporting fields, reserves and also schools, reducing the costs to ratepayers of managing these facilities.
Playford is one of the few councils in the nation to secure a permit with the Australian Pesticide and Veterinary Medicines Authority to apply the Rotenone product to constructed wetlands for managing pest carp populations.