Engaewa is a genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of burrowing crayfish

Crayfish

Crayfish, crawfish, or crawdads – members of the superfamilies Astacoidea and Parastacoidea – are freshwater crustaceans resembling small lobsters, to which they are related...

 belonging to the family Parastacidae

Parastacidae

Parastacidae is the family of freshwater crayfish found in the southern hemisphere. The family is a classic Gondwana-distributed taxon, with extant members in South America, Madagascar, Australia, New Zealand and New Guinea, and extinct taxa also in Antarctica.Three genera are to be found in Chile,...

. There are five recognised species, all endemic to the high-rainfall zone of south-west Western Australia, from Dunsborough

Dunsborough, Western Australia

Dunsborough is a coastal town in the South West of Western Australia, south of Perth on the shores of Geographe Bay.Dunsborough is a popular tourist destination for Western Australians; in 1999 it was voted the state's best tourist destination. During the last decade the town has grown quickly and...

 to Albany

Albany, Western Australia

Albany is a port city in the Great Southern region of Western Australia, some 418 km SE of Perth, the state capital. As of 2009, Albany's population was estimated at 33,600, making it the 6th-largest city in the state....

. They are all small (up to 5 cm), and found only in freshwater

Fresh Water

Fresh Water is the debut album by Australian rock and blues singer Alison McCallum, released in 1972. Rare for an Australian artist at the time, it came in a gatefold sleeve...

 swamp

Swamp

A swamp is a wetland with some flooding of large areas of land by shallow bodies of water. A swamp generally has a large number of hammocks, or dry-land protrusions, covered by aquatic vegetation, or vegetation that tolerates periodical inundation. The two main types of swamp are "true" or swamp...

s and seepages. Three of the five species are listed under the Environment Protection and Biodiversity Conservation Act 1999

Environment Protection and Biodiversity Conservation Act 1999

The Environment Protection and Biodiversity Conservation Act 1999 is an Act of the Parliament of Australia that provides a framework for protection of the Australian environment, including its biodiversity and its natural and culturally significant places...

 (EPBC Act) and are listed on the IUCN Red List

IUCN Red List

The IUCN Red List of Threatened Species , founded in 1963, is the world's most comprehensive inventory of the global conservation status of biological species. The International Union for Conservation of Nature is the world's main authority on the conservation status of species...

 as "endangered" (EN) or "critically endangered" (CR), while the remaining two are listed as "Least Concern

Least Concern

Least Concern is an IUCN category assigned to extant taxon or lower taxa which have been evaluated but do not qualify for any other category. As such they do not qualify as threatened, Near Threatened, or Conservation Dependent...

":

Species	Authority	EPBCA	IUCN
Engaewa pseudoreducta	Horwitz & Adams, 2000	critically endangered
Engaewa reducta	Riek, 1967	endangered Endangered species An endangered species is a population of organisms which is at risk of becoming extinct because it is either few in numbers, or threatened by changing environmental or predation parameters...
Engaewa similis Engaewa similis Engaewa similis is a species of Australian crayfish in the family Parastacidae.-Distribution and conservation:E. similis is endemic to the Augusta region in Western Australia, and can be found from the Margaret River to the vicinity of Windy Harbour. Although previously considered an endangered...	Riek, 1967
Engaewa subcoerulea	Riek, 1967
Engaewa walpolea	Horwitz & Adams, 2000	endangered Endangered species An endangered species is a population of organisms which is at risk of becoming extinct because it is either few in numbers, or threatened by changing environmental or predation parameters...