16/06/2026
Winter is here, and we are right in the midst of crayfish season! But what is so special about our spiky friend the Murray Cray?
The Murray Spiny Crayfish (Euastacus armatus) is found throughout the southern Murray Darling Basin, including right here in the Kolety/Edward River. It is an important social and ecological species, forming an essential part of the food chain. The second largest freshwater crayfish in the world, the Murray Cray prefers cool flowing water and places to burrow beneath timber and rocks. These crayfish have experienced population decline due to many factors including hypoxic blackwater events, river regulation such as weir pools, and sedimentation caused by bank erosion. Due to their status as a Vulnerable species, recreational fishing of Murray Crays has been prohibited in the Kolety/Edward River since 2010.
But good things are happening for the Murray Cray! Throughout the whole of the Murray Darling Basin people are paying more attention to the habitat needs of this beautiful spiky creature. Here in Deniliquin, EWAA is working with government and community groups to (1) determine the current population status in the Kolety/Edward River, (2) showcase them to the local community as an iconic and important species both culturally and ecologically, and (3) find ways to increase population numbers through the possibility of translocating crayfish from other areas with self-sustaining populations.
Last year EWAA helped to host an excellent community event learning all about the Murray Cray. This could not have happened without the support of Deniliquin High School (Official), Deniliquin Kolety Lagoons Landcare Group, Edward River Council, OzFish Unlimited, Primary Industries and Regional Development and NSW Fisheries. Community events like these are essential ways for us to come together, learn about the importance of these freshwater creatures, and work together to care for their habitat and rebuild their population.
Learn more about the Murray Crayfish here: https://www.dpird.nsw.gov.au/fishing/threatened-species/what-current/vulnerable-species2/murray-crayfish