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Crayfish

From Academic Kids

The word crayfish or crawfish can mean:-

  • Freshwater crayfish, described on this page.
Crayfish
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Crayfish.jpeg



Scientific classification
Kingdom:Animalia
Phylum:Arthropoda
Class:Malacostraca
Order:Decapoda
Suborder:Pleocyemata

Template:Taxobox infraordo entry

Superfamily:Astacoidea and
Parastacoidea
Families
  • Astacoidea:
Astacidae
Cambaridae
  • Parastacoidea:
Parastacidae

Crayfish, sometimes called crawfish, crawdads, mudbugs, yabbies, or spoondogs, are freshwater crustaceans (decapoda) resembling small lobsters, to which they are closely related. They are found in bodies of fresh water that do not freeze to the bottom, which are not polluted, and which have shelter against predators. Some crayfish have been found living as much as 3 m (10 feet) underground.

Contents

Geographical distribution

A Swedish lake crayfish
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A Swedish lake crayfish

There are three families of crayfish, two in the northern hemisphere and one in the southern hemisphere. The southern-hemisphere (Gondwana-distributed) family Parastacidae lives in South America, southern Africa, Madagascar and Australasia. Many Australian crayfish are of the genus Cherax; and include the marron (Cherax tenuimanus), red-claw crayfish (Cherax quadricarinatus), yabby (Cherax destructor) and western yabby (Cherax preissii). The world's largest crayfish, Astacopsis gouldi, is found in the rivers of northern Tasmania. It can reach a weight of 4 kg.

The family Astacidae contains the native European crayfish, as well as those in western North America, such as Pacifastacus. The third family, Cambaridae, contains crayfish in east Asia and eastern North America, such as Cambarus, and zarigani (Cambaroides japonicus), a crayfish indigenous to Japanese rivers and ponds.

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Crawfish.jpg

Crayfish as a dish

Crayfish are eaten in Europe, but they are perhaps most popular in Louisiana, where the standard culinary term is crawfish. They are also served in various Cajun dishes in restaurants around the United States. They are usually prepared like lobster, except many more are put into each pot to boil. For use as a main dish, they are often supplemented by items such as potatoes, sausage, corn, onions and garlic bulbs cooked in the same boil, which is heavily spiced with cayenne pepper and other spices. The crawfish may also be fried or blackened. There are also specific preparations for crawfish in cajun and creole food, the best-known of which are crawfish touffe, crawfish po' boy, crawfish pie, and crawfish beignets.

Boiled Crayfish
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Boiled Crayfish

Crayfish is a popular dish in Sweden and Finland, and is by tradition primarily consumed during the fishing season in August. The boil is typically flavored with salt, sugar, and dill. The catch of domestic fresh water crayfish, and even of an implanted American species is very limited and to satisfy demand the majority of what is consumed has to be imported. Sales depended on imports from Turkey for several decades, but after a decline in supply China and the United States are today the biggest sources of import. On the western coast of Sweden, many tend to prefer the larger salt water crayfish, which is caught in the North Sea.

See also: Swedish cuisine.

Crayfish as pets

Crayfish are sometimes kept as pets in fresh water aquariums. They are aggressive and will attempt to eat other fish, and climb out of the tank. They will eat fish flakes.

External Links

References

ja:ザリガニ下目 sv:Krfta fi:ravut

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