News & Events

9/04/20 – Carpe Diem – Carp removal a resounding success!

Seize the day – In collaboration with a number of local organisations, including the City of Stirling, City of Vincent and the Water Corporation, WRM has recently been successful in removing over 160 carp from several lakes and estates in the Perth metropolitan area.

In March, WRM was contracted to remove invasive carp from a number of wetlands in the Perth Metropolitan area. Common carp, Koi carp and goldfish are proliferating in an increasing number of urban wetlands. They are widely believed to detrimentally affect aquatic plants and animals, and overall wetland health, particularly through their destructive feeding habits.

WRM were asked to assist in the removal of five large koi carp located in Hyde Park, in the City of Vincent, and using a combination of netting and trapping, we successfully caught and removed all five individuals from one of the large lakes situated in the park. These koi had been present in this area for a number of years, and had grown to a large size (~ 60cms), with one of the captured individuals being a heavily gravid female. With reports of smaller fish in other lakes, WRM is working with the City to develop an ongoing monitoring and removal program at Hyde Park.

 

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The WRM team in action, using their specially designed electrofishing boat to stun and remove fish

 

WRM was also contracted by the City of Stirling, in collaboration with the Water Corporation, to commence the removal of invasive carp species from Princeton Lakes and Roselea Estate. Over 150 carp were captured and removed from two lakes, with the use of WRM’s specially designed electrofishing boat and nets.

Carp infestation of Perth’s wetlands is a growing issue and stems from the deliberate dumping of unwanted Koi carp, common carp and goldfish. It is believed that in some instances carp are intentionally illegally “stocked” for subsequent human consumption. This is concerning as fish may have consumed heavy metals and metalloids from the sediments, making them unsafe for human consumption.  Community education about environmental consequences is important to prevent further dumping of non-native fish into our precious wetlands.

This removal is the first step in a continued collaborative effort between WRM, the City of Stirling, the City of Vincent and the Water Corporation to target these and additional lakes around the Perth Metropolitan Area.

For more information on the options available for non-native fish removal, please contact Mel Tucker at WRM (http://www.wetlandresearch.com.au/about-wrm/our-team/).

Further information regarding the removal and management of introduced and nuisance animals in wetlands can be found at the DPAW website at the following link, under Chapter 3. Managing Wetlands (https://www.dpaw.wa.gov.au/management/wetlands/publications-and-links/218-a-guide-to-managing-and-restoring-wetlands-in-western-australia).

 

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A large, gravid female koi, held by WRM employee Joey Laugharne, removed from Hyde Park