Fish Habitats

Macquarie perch were once abundant in their namesake, the Macquarie River, yet are now extremely threatened throughout the Murray-Darling Basin.  The species is considered extinct in SA and endangered in NSW, VIC and ACT. Extinction is looming for this little fish, with only four isolated wild populations left in NSW, spanning less than a combined
Epizootic haematopoietic necrosis virus (EHNV) is a lethal virus that infects fish through the body surface or gastrointestinal tract. Once in the host, it multiplies in the blood forming organs such as the spleen and kidney and destroys them in the process, ultimately killing the fish. EHNV is only present in Australia, endemic to catchments
Recently our attention was grabbed by this stunning footage of galaxiids in the Mornington Peninsula area. We absolutely needed to know more! Read on for a short interview with the young videographer. Lucy: How old are you and where are you from? Henry: I am currently 18 years old and completing year 12. I live
Hume Dam photographed from above on a bright sunny day, with a small flow visible.
‘Flow hydrodynamics’, ‘turbulent kinetic energy’, ‘rheotactic behaviour’ - whilst these terms might not mean much to you, they are essential parts of native fish migration in the Murray-Darling Basin.    The Murray-Darling Basin is one of the most regulated river systems in the world, home to over 10,000 barriers preventing fish from migrating. These barriers
An aerial photograph of Lake Eildon Spillway on an overcast day.
Native fish in Australia are hardy, having adapted over millennia to live in one of the driest continents on Earth. However, research shows that even the hardiest of native fish species aren’t immune to the effects of human changes to natural environments. River regulation, in particular, alters aquatic ecosystems significantly, changing the natural environment and