Madagascar blue crayfish: Astacoides granulimanus

During our walk in the Ranomafana rainforest of Madagascar, we came across two local women hiking the rainforest in search of food. They carried with them two crayfish, a blue one and a brown one that they snatched from the river. This is the blue one, held by our guide.

I'm not 100% sure about this identification, here is my source of reference:

http://iz.carnegiemnh.org/crayfish/NewAstacidea/species.asp?g=Astacoides&s=granulimanus&ssp=