Trend in population number and distribution of Macquarie perch (Macquaria australasica)

Since 2012, Macquarie perch (Macquaria australasica) have been stable or increasing their abundance and distribution across ten waterways (see Region).
Region: 
Ovens River, Lake Dartmouth, Seven Creeks, King Parrot Creek, Hughes Creek, Yea River, Hollands Creek, Yarra River, Broken River and Buffalo (upper) River.
Measures: 
Population abundance and distribution