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Home > Sale Items > Invertebrates
Emerald Crab - Group of 3
Mithrax Sculptus
Emerald Crab - Group of 3
  Care Level
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Price Elsewhere: $35.97
Saltwaterfish Price: $24.99
Sale Price: $16.99
Savings: $18.98
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More Details
Tank Stats
Size: 1/2 - 1 inch
Care Level: Easy
Temperament: Peaceful
Reef Safe: With Caution
Diet: Algae, Flake, Algae Sheets
Origin: Caribbean
Acclimation Time: 1+ Hours
Coral Safe: With Caution
Invertebrate Safe:
Minimum Tank Size:
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The Emerald Crab makes a great valuable addition to any aquarium. It is basically introduced into tanks to help tackle bubble algae problems. The Emerald Crab mainly feeds on it and maintains a clean and clear surface of the rocks present in the aquarium. It is completely reef safe, and is very easy to take care of. The Emerald Crab is often considered as scavengers as they clean out most organic debris from the aquarium. It belong to the class Crustacea and order Decapoda, which is characterized by two pair of antennae, three body parts, and five pairs of legs. The Emerald Crab is an extremely hardy creature that can survive even in harsh conditions, and hence for this reason they can tolerate water temperatures within the outer range of their habitat, i.e. from nineties to as low as fifty-five degrees Fahrenheit. This creature is found in abundance within their specific habitat. The Emerald Crab is green in colour with very rough texture, and has hairy legs, and smooth claws which they use to gather food. Their head is mainly connected to the thorax and covered by a shell called carapace, beneath which the small abdomen and tail lies. They mainly stay hidden during the day time and venture out in the evening to forage on various types of algae. Shedding the exoskeleton allows them to remove their restricting shell and begin a fresh new shell. This process is known as ??molting??. The Emerald Crab basically occupies small crevices within rocks and lives on the underside of coral rubble.
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The Emerald Crab, a.k.a. Green Mithrax Crab, is a very popular aquarium species. These crabs have a distinct pre-historic look with their bumpy shells and hairy legs. They are completely green in color and have flattened tips to their claws designed specifically to pull at algae. They are sought after in the aquarium trade for their diet of nuisance bubble algae and other algae in general. They are voracious algae eaters and very docile. They cling to rockwork as they forage and they move very slowly. More than one can be kept in the same tank. They are also good scavengers.Crabs belong to the Class Crustacea and Order Decapoda, which is characterized by two pair of antennae, three body parts, and five pairs of legs. The head of a Crab is connected to the thorax and covered by a shell called carapace. They have a smaller abdomen and tail compared to Shrimp and they keep this tucked beneath the carapace. The first pair of their legs are usually developed claws which they use to gather food, use as protection, and to move objects. In order for Crabs to grow they need to shed their exoskeleton, a process called "molting", which allows them to remove their restricting shell and begin a new one. Often times in the home aquarium Crabs will leave this translucent shell in full view so it can serve as a distraction while the Crab finds a hiding place and allows its new shell to harden.
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All sizes listed are only approximate representations. All pictures and descriptions are generalizations and cannot be exact representations.