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Crab (Mangrove Tree)

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Aratus pisonii
Crab (Mangrove Tree)


They are found from Florida down through Mexico, Central America and into Northern South America (Venezuela and Brazil). They are also found on the Caribbean islands that have mangrove swamps.


They live in the mangroves scrambling up higher in the vegetation during high tide, then coming down to scavenge for food in the sand during low tide.

Body Traits

Their body (carapace) is speckled on a background of light brown to green and reaches at most an inch long. It is wider in the front with large eyes on each front corner giving the crab a good field of vision but an odd wide-eyed look. They have 8 speckled legs and a pair of front claws with tufts of black hairs coming off them.


They can climb trees and mangroves.


They eat insects and whatever organic matter they can scavenge.

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After mating and the fertilization their many eggs, the females hold them on her abdomen until they hatch. Then she climbs down into the water and releases the free-swimming larvae into the water. Only a tiny fraction of them survive to adulthood. She does this many times a year, releasing thousands of larvae.

Crab (Mangrove Tree)


Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class:  Malacostraca
Order:  Decapoda
Infraorder: Brachyura
Family: Sesarmidae
Genus: Aratus
Species: pisonii

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