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Cherax tenuimanus


Cherax tenuimanus
Electric Blue Crayfish
蓝电光螯虾
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.The males have a pair of nodules at the base of the 5th set of legs, and the females have flaps at the base of the 3rd set of legs. They are good escape artists and will use anything to get out of your tank.

When moulting, they will hide more often and will not eat. They can also lay on their backs and flick their tail, trying to kick themselves out of their old shell
Do not remove the old moulted shell from the tank; the Marron will eat it to strengthen its new shell.
To pick up the Marron, it has to be grabbed by the thorax, behind the head and claws, otherwise it will get you with its claws.
Will regrow lost limbs (claws, legs)
A longer day cycle and slightly raised temperature will induce breeding. Be warned, the 300 babies require accommodation away from mummy, she will eat them.
A Marron will need a home, a cave to hide in. I use a piece of black pollythene pipe buried under rocks at the back of my tank.
Lots of plant material. That way you only need to feed it 3 times a week.
Will attempt to move ‘upstream’, so outlets for filters should be Marron proof.
Big, big oxygen users. Produce a lot of CO2 for their size.
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