crayfish   
orambato
[vato, a stone.] a species of crayfish. Astacoides madagascariensis, And. and M.-Edw. [Richardson 1885]
orana
the Madagascar crayfish, which is very plentiful in the rivers and streams of the interior. It belongs to a genus peculiar to te island, and stands alone in some of the peculiarities of its structure. Astacoides madagascariensis, And. and M.-Edw. [comp. mal. Udang, a lobster; jav. And many Malayan languages uran, a prawn.] [Richardson 1885]