Banded Pistol Shrimp care guide
Banded Pistol Shrimp (Alpheus armillatus) — minimum tank 40 L, temperature 24-26 °C, pH 8.1-8.4.
Compiled by Aquairi from published sources · Published · Updated
Overview
Banded Pistol Shrimp (Alpheus armillatus) is a marine pistol (snapping) shrimp of the family Alpheidae, listed in the Aquairi knowledge base as an intermediate-level species. Caribbean pistol shrimp with red-banded body. Less commonly pairs with gobies than Indo-Pacific species; usually solitary.
Taxonomy
- Family: Alpheidae
- Genus: Alpheus
- Scientific name: Alpheus armillatus
- Common synonyms: Caribbean Pistol Shrimp
Habitat
Alpheus pistol (snapping) shrimp are reef and sand-flat alpheids that bear one greatly enlarged claw. Snapping the claw produces a cavitation bubble and a loud pop used to stun prey and deter rivals; many species share a burrow with a partner goby in a well-known symbiosis. In the Aquairi knowledge base this species is recorded from Caribbean, Western Atlantic.
Tank requirements
- Minimum tank volume: 40 L (10.6 US gal)
- Adult size: 3-5 cm
- Temperature: 24-26 °C (75-79 °F)
- pH: 8.1-8.4
- GH: 8-12 °dGH
- KH: 8-12 °dKH
- Salinity (specific gravity): 1.024-1.026
- Lifespan: 3-5 years
Diet
The species is a scavenger, feeding on detritus, small invertebrates and organic particles collected around its burrow; in aquaria it readily takes sinking pellets and frozen foods.
Compatibility
The Aquairi knowledge base lists this species as peaceful. Suitable tank mates include Reef fish. It should be kept away from Predatory fish. It pairs naturally with a partner goby that shares and guards its burrow.
Breeding
Breeding requires a planktonic larval stage, generally in brackish or marine water, which makes captive reproduction very difficult and rarely achieved in home aquaria.
Breeding the Banded Pistol Shrimp (Alpheus armillatus)
Overview
Alpheus armillatus (H. Milne Edwards, 1837) is a pistol shrimp of the family Alpheidae from the western Atlantic and Caribbean. Taxonomic work has shown it to be a species complex, formally revised in 2012 as the western Atlantic Alpheus armillatus group, so trade animals under this name may represent more than one biological species.
Sexing
Like other snapping shrimp, the species has separate sexes and is not hermaphroditic. By the family pattern the female is the egg-carrying sex and breeding pairs tend to be monogamous with mate-guarding, although this Caribbean form pairs with gobies less consistently than Indo-Pacific species.
Breeding Setup
Alpheids dig and maintain burrows in soft substrate, ambushing prey from cover and using the powerful snapping claw. A deep, stable sand bed with rock and rubble provides burrowing structure; a goby partner is optional for this species, which is often kept on its own.
Spawning & Berried Females
Consistent with the family, the female carries the fertilised egg mass beneath her abdomen until the larvae hatch into the plankton. Spawning takes place within the security of the burrow.
Larval Care
Alpheid larvae develop through planktonic nauplius and zoea stages before settling. These minute larvae require graded live foods and stable water over the planktonic period, and no established hobbyist rearing protocol exists for A. armillatus.
Common Challenges
The burrowing, largely hidden lifestyle means spawning is rarely seen, and the planktonic larvae are not commonly raised in aquaria. The unresolved species-complex identity also complicates matching potential breeding partners.