Paguristes cadenati

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Facts
Latin name Paguristes cadenati
Local name Scarlet hermit crab
Family Paguroidea - Paguristes
Origin The Mexican Golf
Max length 4 cm (1,6")
As aquarium fish
Minimum volume 50 l (13 gal)
Hardiness Hardy
Suitable for aquarium Suitable for most aquarium
Reef safe Always reef safe
Aggressiveness Mostly peaceful but might be aggressive towards similar species
Feed
Recommended Macroalgea (Eg. seaweed / nori)
Microalgea (Eg. spirulina)
Mostly Detritus
Small crustaceans (Krill, mysis, artemia...)
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Keep in mind
Number of fish

A good many of these hermit crabs can exist in the same aquarium, but they will kill each other without insufficient space and/or food.

Count therefore on about 40 gal (150 liters) each, if one desires several in one tank.

Descriptions and further reading
Family description (Paguroidea)

Hermit crabs can be lots of fun, but are not particularly useful in the tank.
They are generally easy to keep, but not all species are algae eaters, some eat mostly zooplankton off the rocks.

Remember that they require new shells to grow.

References and further reading

About references

James W. Fatherree. 2010. Aquarium Invertebrates: Crabs in the Marine Aquarium - Advanced Aquarist - (English)
Ronald L. Shimek. 2004. Marine Invertebrates (PocketExpert Guide) - TFH Publications / Microcosm Ltd. - (English)
Bob Fenner. Crabs For Marine Aquariums? Part 1, Part 2, Part 3 - Wet Web Media - (English)