What species is my crayfish?

[benedetto13]

First of all, i just found out about this forum. It's Awwwwwesome i have to say. Everything i want/need to know about everything. It all started one day when my dad came back with this wild crayfish, but till now i still can't find out what kind is she/he.

http://www.flickr.com/photos/edchua/5032563801/

Thanks in advance!

[lucasjiang]

That is cherax quadricarinatus, very common in singapore, introduced to many local waterbodies.