Xanthid crabs (Xanthidae) on the Shores of Singapore.
Definition of Xanthidae: the largest family of crabs (superfamily Brachyrhyncha) comprising chiefly small littoral or shallow water marine crabs with oval carapaces armed with spines or lobes along the anterolateral margin and including the edible stone and coral crabs.
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As a concluding comment, we would like to stress that we applaud further developments in molecular methods of analyzing macergens for a better classification of these macergens. It is our belief, however, that any future progress in taxonomy as a scientific discipline will depend only on the availability of new experimental data that will broaden and refined the view on bacterial diversity.
The Xanthidae Crabs (link - extensive photo gallery) None of which can be considered reef safe and can be the most destructive of the crab types. While very small, they seem to pick at algae on the rocks, but just as with other crabs species, once they gain a bit of size, their ability to pick off and eat any number of invertebrates and corals also increases.
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