Craterocephalus lentiginosus is a species of fish

Fish

Fish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups...

 in the Atherinidae family. It is endemic to the a region in the northwest of 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...

, and referred to by the common names of Prince Regent hardyhead or freckled hardyhead.

Craterocephalus lentiginosus was first described in 1987.
It has been found in variety of habitat, brackish pools or flowing to turgid waters, in the Upper Roe River and one of its tributaries. The distribution range is within the Prince Regent Nature Reserve

Prince Regent Nature Reserve

Prince Regent Nature Reserve is a protected area in the Kimberley region of Western Australia. In 1978 the area was nominated as a UNESCO World Biosphere Reserve.-Description:...

.
The species was assessed as near threatened on the 1996 Redlist

Redlist

Ignorance is the result of Jeff Scott Soto's collaboration with Dave Fraser and Neil Goldberg.-Track listing:# "Migraine" - Used for an episode of the CBS Show "Close to Home"# "World Today"# "Swallow"...

, and in need of reassessment in 2008.