The Murray crayfish, Euastacus armatus, is a species of freshwater crayfish endemic to Australia that belongs to the family Parastacidae. The Murray crayfish has the largest geographic range of any of the Euastacus crayfish in Australia, being found in the Murray and Murrumbidgee Rivers as well as many of their tributaries. Murray crayfish are also known as "Murray River crayfish", "Murray crays", "freshwater crays", "spiny freshwater crays", "spinies" and in the Wagga Wagga region of southern New South Wales they are simply known as "lobsters".
Euastacus is a genus of freshwater crayfish known as "spiny crayfish". They are found in the south-east of the Australian mainland, along with another genus of crayfish, Cherax. Both genera are members of the family Parastacidae, a family of freshwater crayfish restricted to the Southern Hemisphere.
Astacoides madagascarensis is a species of southern crawfish in the family Parastacidae.
Euastacus bindal is a species of southern crawfish in the family Parastacidae.
Euastacus bispinosus, the Glenelg cray, is a species of southern crawfish in the family Parastacidae.
Euastacus crassus is a species of southern crayfish in the family Parastacidae. It is commonly known as the Alpine spiny crayfish.
Euastacus diversus is a species of southern crawfish in the family Parastacidae.
Euastacus eungella is a species of southern crawfish in the family Parastacidae.
Euastacus fleckeri is a species of southern crawfish in the family Parastacidae.
Euastacus hystricosus is a species of southern crawfish in the family Parastacidae.
Euastacus jagara is a species of Australian crayfish in the family Parastacidae. It is known from only six specimens, all collected at the type locality in the Mistake Mountains in the State of Queensland, Australia. The streams inhabited by the species are surrounded by Upland Subtropical Rainforest, and drain into the Brisbane River. The species is listed as critically endangered on the IUCN Red List.
Euastacus maidae is a species of Australian crayfish in the family Parastacidae. It is known only from a single catchment in the Gold Coast hinterland in the State of Queensland, Australia, and is listed as critically endangered on the IUCN Red List. The stream is surrounded by Subtropical Rainforest. This species may also occur in adjacent high rainfall catchments.
Euastacus monteithorum is a species of southern crawfish in the family Parastacidae.
Euastacus neodiversus is a species of southern crawfish in the family Parastacidae.
Euastacus setosus is a species of southern crawfish in the family Parastacidae.
Euastacus urospinosus is a species of southern crawfish in the family Parastacidae.
Euastacus yigara is a species of southern crawfish in the family Parastacidae.
Hobbseus valleculus, the Choctaw riverlet crayfish, is a species of crayfish in the family Cambaridae. It is found in North America.
Euastacus spinifer is a species of freshwater crayfish endemic to Australia that belongs to the family Parastacidae.
Euastacus dalagarbe is a species of freshwater crayfish endemic to Australia that belongs to the family Parastacidae. It has a small range in New South Wales and is regarded by the International Union for Conservation of Nature as "critically endangered".
