Cherax Tenuimanus Hairy |
Cherax Tenuimanus Blue |
Cherax Tenuimanus Black |
Ausie Blue Yabby
Hairy Marron
Margaret River Marron
Blue Marron
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Decapoda
Family: Parastacidae
Genus: Cherax
Species: Cherax Tenuimanus
Other Name : Cherax Tenuimanus, Ausie Blue Yabby, Hairy Marron , Margaret River Marron, Blue Marron, Blue Marron Yabby, Margaret River Yabby
Habitat : Southwestern Australia
Water Temperature : 20 - 27 derajat celcius
pH : 5 - 8
Size in Natural : up to 2,7 Kg
Life Span : 5 - 7 years
One of the largest freshwater crayfish in the world, this hairy-shelled species has jet black pinchers and a paler olive-green to brown body. The hairy marron's (Cherax Tenuimanus) underside is brown and females have areas of red colouration on the underside and some splashes of purple. The head and internal organs of all crayfish are protected by the carapace and the six segments of the abdomen are individually encased with a flexible membrane between them to allow movement. Crayfish have a pair of large pinchers at the front end, followed by four pairs of walking legs and then four pairs of small swimming legs called swimmerets. These swimmerets are covered with fine hairs to which the female attaches her eggs. A central tail flap is surrounded by four other flaps that are used to move the crayfish rapidly through the water, as well as curling up to form a brood chamber in females. There are two eyes on the end of eyestalks, but the senses of touch and taste are far more important. These are perceived using a pair of large feelers (or antennae) and a pair of small, fine, centrally located feelers (or antennules)
Cherax tenuimanus, known as the hairy marron or Margaret River marron, is one of two species of crayfish in Southwestern Australia known as marron. It occupies a narrow range within the southwestern biogeographical region of Margaret River. It is currently listed as critically endangered on the IUCN Red List,
This species is restricted to the upper reaches of the Margaret River in the south-west of Western Australia (Morgan and Beatty 2005, Bunn 2004). This species is currently only known from 11 sites in an area less than 50 km in length (Department of the Environment, Water, Heritage and the Arts 2008). The area of occupancy (AOO) for this species is estimated to be less than 10 km² (Department of the Environment, Water, Heritage and the Arts 2008).
Can reach a mass of 2,7kg. Lateral serrations are found on each side of the rostrum and the carapace has a distinct prominence running back from the postorbital spine. The rostrum ends in a sharp spine
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