Australian Aquatic Biological

Australian aquatic biodiversity research and consultancy

Translocated Cherax paper published

Translocated Cherax destructor from Mount White, NSW

Translocated Cherax destructor from Mount White, NSW

Based on the results of the Australian Crayfish Project a scientific paper on the translocation of the yabby Cherax destructor into eastern drainages of New South Wales, has been published in the scientific journal “Australian Zoologist”. The Royal Zoological Society publishes a fully refereed scientific journal, Australian Zoologist, specialising in topics relevant to Australian zoology. The Australian Zoologist was first published by the Society in 1914, making it the oldest Australian journal specialising in zoological topics. The scope of the journal has increased substantially in the last 20 years, and it now attracts papers on a wide variety of zoological, ecological and environmentally related topics.The Royal Zoological Society of New South Wales is a non-profit, scientific organisation dedicated to the study and conservation of native Australian fauna.

Translocated Cherax destructor from Piles Creek, Gosford, NSW

Translocated Cherax destructor from Piles Creek, Gosford, NSW


The blue claw yabby Cherax destructor is a native of the Murray Darling drainage basin in the interior of south-eastern Australia. In New South Wales (NSW) the species naturally occurs west of the Great Dividing Range but recently, it has become established in eastern parts of NSW, outside of its natural range. The potential threats and translocation of this species into eastern NSW was first documented at 20 sites by Coughran et al. (2009). This paper builds on their initial work and documents a further 52 translocation sites (Table 1) recorded over the last four years. In an effort to further our understanding of the threat, we present information on the dispersal of this species together with observational information on interactions with freshwater crayfish (Parastacidae) species and suggest recommendations to help slow the translocation process.

McCormack, R.B. (2014). New records and review of the translocation of the yabby Cherax destructor into eastern drainages of New South Wales, Australia. Australian Zoologist. Volume 37 (1) 85 – 94. ISSN 0067-2238 (Print).

Yabbies make great pets and are excellent eating, but unlike the endemic freshwater crayfish in eastern drainages, they grows fast, mature early, breed frequently and have a shorter gestation period. These are traits that equip it to potentially out-compete the endemic freshwater crayfish. Their rapid proliferation, aggressive disposition and invasive habits tend to rapidly displace the endemic eastern crayfish. The NSW Fisheries Scientific Committee has listed ‘The introduction of fish to fresh waters within a river catchment outside their natural range’ as a Key Threatening Process (KTP) under the Fisheries Management Act 1994 (FM Act), and the yabby is certainly a threat in eastern NSW. This paper documents ACP research over the last 4 years and is a must for those interested in the conservation of our endemic eastern crayfish species.


Robert McCormack is the Research and Aquaculture Director for Australian Aquatic Biological P/L. He is a Research Associate with the Carnegie Museum in Pittsburgh, USA, is Secretary of the NSW Aquaculture Association Inc. and the team leader of the privately funded Australian Crayfish Project, which conducts biological studies of every creek and stream in Australia, collecting and identifying crustaceans. Robert has a passion for freshwater crayfish traveling across Australia to find and photograph them.


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