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The Tasmanian giant freshwater crayfish (Astacopsis gouldi), also called Tasmanian giant freshwater lobster, is the largest freshwater invertebrate and the largest freshwater crayfish species in the world. The species is only found in the rivers below 400 metres (1,300 ft) above sea level in northern Tasmania, an island-state of Australia.
The global annual production of freshwater prawns (excluding crayfish and crabs) in 2007 was about 460,000 tonnes, exceeding 1.86 billion dollars. [47] Additionally, China produced about 370,000 tonnes of Chinese river crab. [48] In addition astaciculture is the freshwater farming of crayfish (mostly in the US, Australia, and Europe). [49]
It is home to the world's three largest freshwater crayfish: the Tasmanian giant freshwater crayfish Astacopsis gouldi, which can achieve a mass over 5 kg (11 lb) and is found in rivers of northern Tasmania [23] the Murray crayfish Euastacus armatus, which can reach 2.5 kg (5.5 lb), although reports of animals up to 3 kg (6.6 lb) have been made
Astacopsis is a genus of crayfish endemic to the island of Tasmania.There are three extant species, Astacopsis gouldi, Astacopsis franklinii, and Astacopsis tricornis.All are threatened by illegal harvesting, [1] [2] [3] and A. gouldi is protected by law. [1]
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. [2]
Lobsters of the family Nephropidae are similar in overall form to several other related groups. They differ from freshwater crayfish in lacking the joint between the last two segments of the thorax, [10] and they differ from the reef lobsters of the family Enoplometopidae in having full claws on the first three pairs of legs, rather than just ...
There is evidence of aquaculture being practised in Australia thousands of years ago by some of the Aboriginal Australian peoples, notably the Gunditjmara's farming of short-finned eels in the Budj Bim heritage areas in western Victoria, and the Brewarrina fish traps on the Barwon River in New South Wales, which were created and used by a number of local peoples.
Marron is a name given to two closely related species of crayfish in Western Australia. Formerly considered a single species, it is since recognised as comprising two species, the critically endangered Cherax tenuimanus , and the species that is outcompeting it, C. cainii .
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