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Crayfish usually have limited home range and so they rest, digest, and eliminate their waste, most commonly in the same location each day. Feeding exposes the crayfish to risk of predation, and so feeding behaviour is often rapid and synchronised with feeding processes that reduce such risks — eat, hide, process and eliminate.
The Everglades crayfish [2] (Procambarus alleni), sometimes called the Florida crayfish, the blue crayfish, the electric blue crayfish, or the sapphire crayfish, is a species of freshwater crayfish endemic to Florida in the United States.
Murray crayfish have large white claws and a dark olive/grey/black carapace, all of which are covered in short robust spikes. [2] In small individuals, the claws are green and yellow. [2] The crayfish begin to breed when they are 15–20 cm (6–8 in) long, which takes between 6 and 9 years. [2]
Farmed marron (Cherax cainii) on Kangaroo IslandAustralia is home to genus Cherax which is distinct from European, Asian and North and South American species. Two of the Australian edible crayfish are the common yabby (C. destructor) and the red claw (C. quadricarinatus).
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.
Astacus astacus, the European crayfish, noble crayfish, or broad-fingered crayfish, is the most common species of crayfish in Europe, and a traditional food source. Like other true crayfish, A. astacus is restricted to fresh water , living only in unpolluted streams, rivers, and lakes.
Back in the 1940s, rice farmers realised their flooded rectangular ponds were the perfect breeding ground for crawfish, which thrived on the rice stalks, and promptly set up a two-for-the-price-of ...
Procambarus clarkii, known variously as the red swamp crayfish, Louisiana crawfish or mudbug, [3] is a species of cambarid crayfish native to freshwater bodies of northern Mexico, and southern and southeastern United States, but also introduced elsewhere (both in North America and other continents), where it is often an invasive pest.