Macquaria novemaculeata, commonly known as the spotted mackerel, is a species of fish native to the rivers and coastal waters of eastern Australia. It is characterized by its elongated body and distinctive pattern of nine dark spots along its sides, which helps in identification. This species typically inhabits freshwater environments but can also be found in brackish and marine waters. The spotted mackerel is an important species for both recreational and commercial fishing. It feeds primarily on smaller fish and invertebrates, playing a vital role in the aquatic food web. Conservation efforts are in place to ensure sustainable populations of Macquaria novemaculeata in its natural habitat.