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Edwards' Snapping Shrimp

Alpheus edwardsii

A marine invertebrate species of the family Alpheidae, valued by aquarists for its interesting behavior and beautiful coloration.

Family
Alpheidae
Origin
Indo-Pacifico tropicale, diffuso dal Mar Rosso all'Australia; migrato nel Mediterraneo orientale tramite il Canale di Suez.
Origin
Tropical oceans and reefsExtra-Amazon South AmericaEurope, Mediterranean, and West AsiaAustralia, New Guinea, and Oceania
Tank use
Used in 0 tanks

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Species challenges
Water Temperature

20 °C - 27 °C

pH Value

8.1 - 8.4

Water type

Marine

Ecological role

Spazzino

Copper

Alta

Species description

Geographical Origin and Habitat: Tropical Indo-Pacific, distributed from Red Sea to Australia; migrated into eastern Mediterranean Sea via Suez Canal. Typically lives in areas rich in coral rocks and sheltered sandy crevices.

Taxonomy: Belongs to the family Alpheidae. Features a robust protective exoskeleton with claws developed for defense and burrowing. Size up to 4.5 cm.

Social Behavior: Predominantly solitary or gregarious depending on shelter availability. Plays a crucial ecological role as a scavenger.

Coloration and Sexual Dimorphism: Coloration varies from brown to bright red. Sexual dimorphism is not highly pronounced externally, except for abdomen shape or claw size.

Care, breeding and tankmates

Tank Setup: Requires a reef aquarium with plenty of live rock. For hermit crabs, it is essential to provide empty gastropod shells of various sizes to support growth.

Diet and Feeding: Omnivorous. Feeds on detritus, algae, leftover food, and small crustaceans.

Water Quality: Standard marine values: temperature 20.0-27.0°C, pH 8.1-8.4, constant salinity, and absolute absence of copper in the aquarium.

Compatibility and Tankmates: 100% reef-safe. Compatible with almost all peaceful tankmates. Avoid predatory fish that feed on crustaceans (e.g. puffers or lionfish).

Aquarium Breeding: Oviparous reproduction with internal mating. Eggs guarded by the female under the abdomen.

Risks and Diseases: After molting, it isolates itself in the burrow until the snapping claw hardens. High sensitivity to heavy metals (copper) and sudden osmotic shocks.

Invertebrate profile

Type
Marine shrimp
Diet
Onnivoro
Ecological role
Spazzino
Minimum group
1
Adult size
4.5 cm
GH
n/a
KH
8 dKH - 12 dKH
TDS
n/a
Copper
Alta
Shock sensitivity
Alta
Calcium and minerals
Magnesio e calcio costanti favoriscono la muta regolare ed evitano malformazioni delle chele.
Molting
Dopo la muta si isola nella galleria finché la chela schioccante non si indurisce.
Reproduction
Riproduzione ovipara con accoppiamento interno. Uova custodite dalla femmina sotto l'addome.
Compatibility & tankmates
Reef-safe. Scava gallerie profonde; fissare le rocce alla base di vetro dell'acquario.

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