Mithrax sculptus - Emerald Mithrax Crab

Family - Majidae

Order - Decapoda

Length - Up to 3 inches

Recognition - Bright green circular body

Habitat - Tropical saltwater bodies

Behavior - Omnivore

Residency - Caribbean

Life Span - Up to 10 years

Of Special Note - The emerald mithrax crab is a very hardy crab that is popular in aquariums. It is brightly colored and has a shiny body with hairy legs. It is a scavenger and gladly eats various species of algae, including bubble algae.

Unfortunately, this crab species can be hostile towards tankmates if it gets hungry. It is known to attack everything from fish to coral if desperate enough. As a result, it might not be suitable for a reef tank except when combating bubble algae.

Return to the Aquatic Invertebrates Section

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