Editing Eastern freshwater cod (section)

==Range==
Eastern freshwater cod are native to the Clarence River system in northern New South Wales, Australia.  The Clarence River system is an extensive East Coast drainage with many tributaries of differing size.  By Australian standards, the Clarence River and its major tributaries the Mann and Nymboida Rivers are extremely large rivers with extremely large flow volumes.

Eastern freshwater cod originally occurred in great abundance throughout the system, to significant altitudes.  Though reportedly ''M. ikei'' were never found above the large falls in some headwaters, the uppermost reaches of many tributaries feature in this species' range.

The indigenous cod population of the Richmond River system ([[Richmond River cod]]), now extinct, are believed to have been a sub-population of eastern freshwater cod.  The Richmond River has been restocked with fingerlings (juvenile fish) produced from Clarence River cod, but no evidence of breeding has been found.<ref name=Anon_2004/>

A closely related freshwater cod was historically common in the Brisbane River system, however the exact taxonomic status of the now-extinct [[Brisbane River cod]] is not known.<ref name=fishes/>