Territory Stories

Technical annual report 2000-01



Technical annual report 2000-01


Dept. of Regional Development, Primary Industry, Fisheries and Resources technical annual report; Department of Regional Development, Primary Industry, Fisheries and Resources technical and annual report; Reports; PublicationNT; Technical bulletin (Northern Territory. Dept. of Primary Industry and Fisheries) ; no. 295




Made available via the Publications (Legal Deposit) Act 2004 (NT).






Agriculture -- Northern Territory -- Periodicals; Fisheries -- Northern Territory -- Periodicals

Publisher name

Dept. of Primary Industry and Fisheries

Place of publication



Technical bulletin (Northern Territory. Dept. of Primary Industry and Fisheries) ; no. 295



Copyright owner

Check within Publication or with content Publisher.

Parent handle


Citation address


Page content

Technical Annual Report 2000/01 291 Eradication of Mosquito Fish In April 2001 an extensive program was undertaken in Alice Springs to eradicate a number of isolated populations of the mosquito fish Gambusia species from back yard ponds after an initial population resident in Ilparpa Swamp was eradicated with the assistance of Alice Springs Regional Waterwatch Coordinator, Robbie Henderson. It was following publicity on the Ilparpa Gambusia sp. eradication exercise that local residents came forward declaring populations of the noxious species in their own backyard ponds. APM staff visited Alice Springs to coordinate the eradication exercise. Gambusia sp. was eradicated from two backyard ponds and the Todd Street Mall Church pond by using a combination of biodegradable poison (rotenone) and pumping the water dry. Gambusia sp. is a prohibited introduced pest that has similar invasive characteristics as the Jewel Cichlid H. bimaculatus. It is believed that Gambusia sp. was originally introduced into Australia as a mosquito control fish. However, it has proven ineffective in mosquito control and only serves to displace and out compete our native species for food and space. The primary concern was the possibility of translocation of Gambusia sp. into the local catchments such as the Todd or Finke where it could threaten our native fish stocks. After the successful eradication exercise APMP increased public awareness through advertisements and news articles in addition to the distribution of flyers. At this stage no more reports have been received of sightings of Gambusia sp. Conclusion: Aquatic Pest Management will continue to respond to aquatic pest sightings and attempt to eradicate any aquatic pest species. In addition, the APMP will promote public awareness of the problems associated with the introduction of exotic fish and the importance of not releasing aquarium fish into our local waterways. Brochures and posters will also be developed highlighting those feral fish that should be reported.