''Geosesarma rouxi'' is a species of small,
semi-terrestrial freshwater
crabs native to Java,
Indonesia.
They are commonly known in the pet trade as rainbow vampire crabs.
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Description
Adult ''G. rouxi'' can reach 2 inches in size, with a yellow and light blue
carapace
A carapace is a Dorsum (biology), dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods, such as crustaceans and arachnids, as well as vertebrates, such as turtles and tortoises. In turtles and tor ...
and dark red legs.
References
Sesarmidae
{{Brachyura-stub