The Numeralla river in New South Wales, Australia, is a diverse ecosystem rich with many different animal species such as the uncommonly seen Wanderer's Kingfisher and the Kiora frog. Its native freshwater fish fauna however has unfortunately been entirely replaced by introduced trout species, now replaced by the introduced European carp species; a common situation in south-east Australia. The Numeralla river joins the upper Murrumbidgee River near Bredbo.