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InvertebrateMarineEasy

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Sharp-femured Pistol Shrimp

Alpheus acutofemoratus

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

Family
Alpheidae
Origin
Indo-Pacifico tropicale, comune su fondali sabbiosi riparati dalle barriere coralline.
Origin
Tropical oceans and reefsExtra-Amazon South America
Tank use
Used in 0 tanks

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Species challenges
Water Temperature

22 °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, common on sandy bottoms sheltered by coral reefs. 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. Consumes detritus, food remnants brought by the goby, and small benthic organisms.

Water Quality: Standard marine values: temperature 22.0-27.0°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: Spawning occurs in the burrow. Female broods the eggs under the abdomen until pelagic larval release.

Risks and Diseases: During molting, it barricades itself inside the excavated tunnels by closing the entrance. 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
Integrazione regolare di calcio e oligoelementi essenziale per la muta.
Molting
Durante la muta si barrica all'interno delle gallerie di scavo chiudendo l'ingresso.
Reproduction
Accoppiamento in tana. La femmina cova le uova sotto l'addome fino al rilascio pelagico delle larve.
Compatibility & tankmates
Totalmente reef-safe. Si consiglia la convivenza con ghiozzi simbionti del genere Amblyeleotris o Cryptocentrus.

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