New Zealand Journal of Marine and Freshwater Research abstracts

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Priority management actions for alien freshwater fish species in Australia

John D. Koehn

Arthur Rylah Institute for Environmental Research
Department of Sustainability and Environment
123 Brown Street, Heidelberg
VIC 3084, Australia
email: John.Koehn@dse.vic.gov.au

Rachel F. Mackenzie

Queensland Fisheries Service
GPO Box 46, Brisbane
Q 4001, Australia
email: Rachel.Mackenzie@nrm.qld.gov.au

Abstract  In Australia, alien freshwater fish are continuing to steadily increase in number of species (reported in this paper to be 43), abundance, and distribution. In general however, their impacts are not well quantified in either environmental or economic terms and current management to reduce their impacts is limited and lacking direction. Although carp Cyprinus carpio have received some attention, very little is known about the impacts and even the distribution of most species. There is a lack of recognition of the problem, inconsistency in legislation, policy, and approaches across jurisdictions, and no nationally coordinated on-the-ground management actions. Where legislation and policy is available it is not always used to good effect. This paper provides a synthesis of existing knowledge of alien fishes in Australia, suggests a new management approach, and recommends priority management actions.

Keywords  invasive fishes; control; impacts; management; benefit:cost; carp

M03068; Received 10 October 2003; accepted 26 February 2004; Online publication date 3 August 2004
New Zealand Journal of Marine and Freshwater Research, 2004, Vol. 38: 457-472
0028-8330/04/3803-0457 © The Royal Society of New Zealand 2004

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