Aquatic Life

Many important wetland creatures live permanently below the surface of the water and then there are those that exist both above and below the water line.  Wetlands provide important habitat for water bugs, turtles, frogs and fish species.  

Water Bugs

Water bugs (macro-invertebrates) that live in wetlands can be quite different to those living in rivers and creeks.  This is due to the differences in water movement where the wetland is much calmer than the consistent flow of a creek or river.  Macro-invertebrates can be quite sensitive to their environment and the presence of some sensitive species indicate good water health.  The Water Bug Identification Sheet can help you identify water bugs you may find at the Marrambidya Wetland and also give an indication of their sensitivity to water quality.


Fingerlings have been released into the ponds at the Marrambidya Wetland to establish a healthy fish population.  Approximately 20,000 Murray River Rainbow Fish, Native Gudgeon, Freshwater Shrimps and Yabbies were released into the wetland in June 2016.


Wetlands provide perfect habitat for tadpoles and frogs with the presence of both wet and dry environments.  The still waters of the ponds and the water plants provide shelter for the tadpoles to grow big and develop into fully grown frogs.  Frogs are sometimes very hard to see so we rely heavily on identifying their calls to determine which species are residing at the Marrambidya Wetland.

Frogs of the Marrambidya Wetland include:

  • Giant Banjo Frog
  • Barking Marsh Frog
  • Common Eastern Froglet
  • Plains Froglet
  • Peron's Tree Frog

As the wetland becomes more established as the vegetation grows it is hoped the endangered Southern Bell Frog will find safe refuge in this new reserve. 


Perhaps one of the cutest residents of the Marrumbidya Wetland would be the turtle.  These cool creatures can be seen sunning themselves on the various snags located within the ponds.  When visiting the Marrambidya Wetland look out for the Eastern Long-necked Tortoise and the Murray Turtle.