Back to atlas
InvertebrateTerrestrialEasy

Encyclopaedia

Ecuadorian Hermit Crab

Coenobita compressus

A small terrestrial land hermit crab native to the Pacific coast of the Americas, famous for being one of the fastest, most active, and skilled climbing species.

Family
Coenobitidae
Origin
Costa del Pacifico delle Americhe
Origin
Tropical oceans and reefsExtra-Amazon South AmericaCentral America and CaribbeanNorth America
Tank use
Used in 0 tanks

Share

Species challenges
Water Temperature

22 °C - 30 °C

pH Value

n/a

Water type

Terrestrial

Ecological role

Spazzino

Copper

Alta

Species description

Geographical Origin and Habitat: Distributed along the Pacific coast of the Americas, from southern California and Mexico to Ecuador and northern Peru. Inhabits sandy beaches and coastal forests.

Taxonomy: Member of the family Coenobitidae. Features elongated, laterally compressed eye stalks. The body is slightly compressed, enabling fast movement. Grows to 4-5 cm.

Social Behavior: Highly active, curious, and energetic. Scuttles at surprising speeds and loves to climb high branches in the terrarium. Very social and does best in colonies.

Coloration and Sexual Dimorphism: Color varies from grey, olive-green, and tan to bright shades of orange or yellow. Eye stalks are dark and comma-shaped. No visible sexual dimorphism.

Care, breeding and tankmates

Tank Setup: Requires a dry terrarium with at least 6 inches of moist sand and coconut fiber substrate. Providing climbing nets, branches, and logs is highly recommended.

Diet and Feeding: Opportunistic omnivore. Eats fresh fruits, vegetables, dried insects, fish meat, and specialized hermit crab pellets. Cuttlebone must be provided to supply calcium.

Water Quality: Dry setup with relative humidity kept at 70-80%. Provide two shallow water dishes: one with dechlorinated fresh water, and one with marine salt water. The crab must be able to submerge.

Compatibility and Tankmates: Keep only in terrariums with other land hermit crab species. Coexists peacefully in large groups of its own or related species (Coenobita).

Aquarium Breeding: Extremely difficult. Breeding involves releasing zoeal larvae in ocean waves in the wild, which require specialized planktonic food to survive.

Risks and Diseases: Fast dehydration and death if humidity drops below 70%. Molting failure if the substrate is dry or shallow. Avoid any copper-based chemical treatments.

Invertebrate profile

Type
Paguro terrestre
Diet
Onnivoro
Ecological role
Spazzino
Minimum group
3
Adult size
5 cm
GH
n/a
KH
n/a
TDS
n/a
Copper
Alta
Shock sensitivity
Media
Calcium and minerals
Calcio alimentare essenziale per consentire un esoscheletro robusto.
Molting
Si sotterra completamente nella sabbia umida per effettuare la muta, rimanendo sepolto per diverse settimane.
Reproduction
La riproduzione in cattività richiede condizioni di marea marine complesse e non è praticabile in ambiente domestico.
Compatibility & tankmates
Da allevare solo in terrari specifici per paguri terrestri. Richiede la convivenza con conspecifici.

Ecological Estimates & Biological Models

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.

Related species

Other recommended species with similar care requirements and water parameters.

Last updated: 06/13/2026