Description
Astacoides species are large for freshwater crayfish, reaching a carapace length of up to 80 millimetres (3.1 in) in the case of A. betsileoensis. Males and females are similar, except for the organs directly involved in reproduction. Thomas Henry Huxley, in his book The Crayfish, noted that Astacoides has fewer pairs of gills than any other crayfish, with only 12 pairs compared to 21 pairs in Astacopsis.
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