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ShareThe term crab is often applied to several different groups of short (nose to tail) decapod crustaceans with thick exoskeletons, but only members of the Brachyura are true crabs; other taxa, such as hermit crabs, porcelain crabs, king crabs, and horseshoe crabs are, despite superficial similarities, not crabs at all.
Hermit crabs, king crabs and porcelain crabs belong to the Anomura and can be distinguished from true crabs by counting the legs.
For more information about the topic Crab, read the full article at Wikipedia.org, or see the following related articles:
Hermit crab — Hermit crabs are distinct from the true crabs in the infra-order Brachyura. Most hermit crabs salvage empty seashells to shelter and protect their ... > read more
Arthropod — Arthropods (phylum Arthropoda) are the largest phylum of animals and include the insects, arachnids, crustaceans, and others. More than 80% of ... > read more
Horseshoe crab — The horseshoe crab (Limulus polyphemus) is an arthropod that is more closely related to spiders than crabs. Horseshoe crabs possess the rare ability ... > read more
Crab louse — Crab lice (singular, louse), scientific name Phthirus pubis and commonly called "crabs" due to their resemblance to the crab, are one of three kinds ... > read more
Barnacle — A barnacle is a type of arthropod belonging to infraclass Cirripedia in the subphylum Crustacea. Barnacles often attach themselves to human-made ... > read more
Shrimp — True shrimp are small, swimming, decapod crustaceans classified in the infraorder Caridea, found widely around the world in both fresh and salt ... > read more
Crayfish — Crayfish, sometimes called crawfish, are freshwater crustaceans resembling small lobsters, to which they are closely related. They are found in ... > read more
Editor's Note: This article is not intended to provide medical advice, diagnosis or treatment.
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