The Fly-specked Hardyhead (Craterocephalus stercusmuscarum) is a species of fish in the Atherinidae family that can be found in some of the freshwater streams of the Northern Territory

Northern Territory

The Northern Territory is a federal territory of Australia, occupying much of the centre of the mainland continent, as well as the central northern regions...

 down the east coast of Queensland

Queensland

Queensland is a state of Australia, occupying the north-eastern section of the mainland continent. It is bordered by the Northern Territory, South Australia and New South Wales to the west, south-west and south respectively. To the east, Queensland is bordered by the Coral Sea and Pacific Ocean...

 into southern Queensland. It forms shoals in streams' shallows (both slow flowing and fast flowing). It grows up to 10 cm (usually 5–6 cm) in length and is endemic to Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

The Australian Museum

Australian Museum

The Australian Museum is the oldest museum in Australia, with an international reputation in the fields of natural history and anthropology. It features collections of vertebrate and invertebrate zoology, as well as mineralogy, palaeontology, and anthropology...

 has a sample taken from the Annan Riverhttp://www.amonline.net.au/collections/ichthyology/record.cfm?id=33 in its Ichthyology

Ichthyology

Ichthyology is the branch of zoology devoted to the study of fish. This includes skeletal fish , cartilaginous fish , and jawless fish...

 collection. The Museum describes the species as follows:

The Flyspecked Hardyhead has a slender body covered with black dots. This pattern gave rise to the common name. The fish is golden yellow to deep green above, changing to white below. A dusky to silver stripe runs from the snout to the caudal peduncle.

The Flyspecked Hardyhead eats mainly mosquito larvae and aquatic insects. It will also eat crustaceans and has been observed eating algae in aquaria. It can be easily kept in aquaria but its natural colours often fade.