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Top - Catalog - Inverts - Crabs - Emerald Mithrax Crab (Mithrax Sculptus)

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                         Quick Facts

Item ID


Common Name

Emerald Mithrax Crabs

Scientific Name

Mithrax Sculptus 



Algae Pads, Pellets, Flake


Western Pacific: &  all the Caribbean Islands



Care Level




Reef Compatibility


Minimum Size

24 Gallons

Tank Conditions

72-78°F; sg 1.023-1025; pH 8.1-4; dKH 8-12. 1

The Emeral Crab is perhaps the most purchased along with the sally lightfoot among the entire Invert aquaria industry. This particular fellow has a bright green color and it is very useful against algae. In the wild it is often seen in reef flats and fore slopes where algae grows quikly so they can graze on easily.


Crabs are the animals that most people think of when they think of crustaceans. Crabs can be found on land - even in deserts - and down to the greatest depths of the oceans. They come in many different shapes and sizes but always have one pair of chelipeds (claws, pincers or nippers) and four pairs of walking legs. Typically crabs are wider than long and with legs enabling them to run sideways. Many are more or less triangular or spherical and move slowly in all directions. True crabs belong to the infraorder Brachyura and can be divided into as many as 50 families.


Approximate Purchase Size:  Medium: 1/2:' to 1.5'; Large: 2' to 3'+

Available Options:
Med $4.00
Large $2.50
3 LG Lot $7.50
10 LG Lot $25.00
20 LG Lot $50.00
50 LG Lot $149.98
100 LG Lot $289.98

All sizes, pictures and descriptions listed of all species are approximations.
Prices are subject to change without prior notice.

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