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Diagonal-bar Shrimpgoby

Amblyeleotris diagonalis

Found near sandy outer reefs, this slender goby forms a symbiotic bond with pistol shrimp. It needs a 100L tank with deep mixed sand and a secure rock structure.

Taxonomy
Class:Actinopteri
Order:Perciformes
Family:Gobiidae
Subfamily:Gobiinae
Genus:Amblyeleotris
Species:Amblyeleotris diagonalis

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Water Temperature

22 - 26 °C

pH Value

8.1 - 8.4

Water type

Marine

Tank level

Bottom

Adult size

11 cm

Minimum tank volume

>= 100 L

Minimum group

>= 1

KH

8 - 12 dKH

Species description

Geographical Origin and Habitat: Indo-Pacific: Red Sea and East Africa to the Solomon Islands and the Great Barrier Reef. Found on sandy patches near outer reefs from 2 to 30 meters deep. They are commonly found on the sandy fringes of reefs where rubble provides structure for burrow building.
Taxonomy and Morphology: Member of the family Gobiidae. Slender body with large, close-set eyes on top of the head. Reaches 11.0 cm in length. Their eyes can move independently, which is a great adaptation for scanning the environment for threats.
Social Behavior: Symbiotic. Shares a burrow with Alpheus snapping shrimp, acting as the eyes and lookout for the shrimp while it digs. The goby acts as a sentry, keeping physical contact with the shrimp's antennae at all times near the burrow.
Coloration and Sexual Dimorphism: Whitish-grey base color with 5 prominent diagonal orange-brown bands. Iridescent blue spots scatter across the head. No sexual dimorphism. The diagonal orange bands are highly contrasting, helping them communicate with conspecifics in sandy habitats.

Care, breeding and tankmates

Aquarium Setup: Requires a tank of at least 100 liters with a deep substrate of mixed sand, gravel, and shell rubble. Rock structures must be secure. Secure lid is mandatory. The sand bed should be deep enough to allow the shrimp to excavate a stable tunnel system under the rocks.
Diet and Feeding: Carnivorous. Feeds on benthic invertebrates. Accepts frozen mysis, artemia, chopped table shrimp, and sinking carnivore pellets. Target feeding with a long pipette is recommended to ensure the goby gets enough food in active tanks.
Water Quality: Keep reef parameters stable: temperature 22-26 °C, pH 8.1-8.4, salinity SG 1.020-1.025. Standard reef filtration. Stable alkalinity and pH levels are important to maintain the health of both the goby and its symbiotic shrimp.
Compatibility and Cohabitation: Peaceful with other fish. Keep with a compatible Alpheus shrimp. Avoid housing with aggressive bottom dwellers. Highly compatible with other peaceful reef fish; they will not disturb corals or other ornamental invertebrates.
Aquarium Breeding: Spawns inside the shared burrow. Both parents protect the nest. Rearing the planktonic larvae is extremely difficult. The spawning process is highly secretive, and the tiny larvae require specialized rotifer and copepod cultures.
Risks and Diseases: Known to jump if startled. Starvation risk if it does not establish its burrow with a shrimp partner. Startle responses are common; ensure the aquarium is completely covered to prevent the fish from jumping out.

Geographic Origin and Distribution

Indo-Pacific: Red Sea and East Africa to the Solomon Islands and the Great Barrier Reef. Found on sandy patches near outer reefs from 2 to 30 meters deep. They are commonly found on the sandy fringes of reefs where rubble provides structure for burrow building.

Origin

Tropical oceans and reefsAfrica and MadagascarEast Asia

Fish profile

Temperament
Peaceful
It is a peaceful, somewhat timid fish that relies heavily on its symbiotic relationship with a pistol shrimp for safety. It acts as the lookout, warning the nearly blind shrimp of approaching danger with a flick of its tail. It only shows aggression toward other benthic gobies that encroach on its specific territory.
Diet
Carnivore
This species is a carnivore that naturally feeds on small benthic invertebrates. In captivity, it eagerly accepts frozen mysis, enriched brine shrimp, and sinking micropellets. Ensuring the food reaches the bottom near its burrow is essential for proper feeding.
Sex ratio
Flexible
They should be kept singly or as a specifically acquired mated pair. Introducing multiple males into the same aquarium will inevitably lead to aggressive territorial disputes. Because visual sexing is nearly impossible, acquiring an established pair is the safest option.
Feeding frequency
Twice daily
It should be fed small meaty meals once or twice a day. Target feeding using a turkey baster or long pipette directly over its burrow is highly recommended. It will rarely venture far from its safe haven to compete for food in the water column.
Bioload
The Diagonal Shrimpgoby contributes a relatively light bioload to the aquarium. It is a small, relatively inactive species that does not require massive amounts of food. Its minimal waste production makes it an excellent choice for modestly sized nano reefs.
Flow
Strong
It prefers a gentle to moderate water flow near the substrate. Strong, turbulent currents can easily collapse its burrow and cause significant stress. A calm environment allows it to comfortably observe its surroundings from its burrow entrance.
Jump risk
Yes
Like almost all gobies, it poses a severe jump risk when frightened or harassed. A tightly fitting aquarium cover or fine mesh lid is completely necessary. Open-topped tanks are highly unsuitable and will likely result in the loss of the fish.
Reproduction
Oviparous
Captive breeding is possible but rare, usually occurring when paired with a symbiotic pistol shrimp. Eggs are laid deep within the shrimp's complex burrow and guarded fiercely by the male goby. The resulting larvae are microscopic and require advanced planktonic rearing techniques.
Compatibility & tankmates
Peaceful
It is an incredibly peaceful fish that makes a perfect addition to a community reef tank. It poses absolutely no threat to corals or most ornamental invertebrates. It should not be housed with aggressive, fast-swimming, or large predatory fish that might eat it.
Tank level
Bottom
It is an obligate bottom-dwelling species that rarely leaves the sandy substrate. It spends its entire life hovering just outside the entrance of its constructed burrow. It relies entirely on the live rock and deep sand bed for its security.

Window to the official scientific data of the species

Data synced on: 06/15/2026

Scientific Parameters & Models

Trophic level
3.4 ± 0.4 se
Resilience
High (less than 15 months)
Phylogenetic uniqueness (PD50)
0.5
Bayesian Length-Weight
a = 0.00741, b = 3.09
VulnerabilityLow vulnerability (10 / 100)

Image gallery

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

Related species

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Variants and close relatives

Same atlas type, nearby scientific identity, genus, or family.

Banded-head Shrimpgoby

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Downing's Shrimpgoby

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Ellipse shrimpgoby

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New Caledonia Shrimpgoby

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Red-banded Shrimpgoby

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Spotted-tail Shrimpgoby

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Orange-spotted Prawn-goby

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Amblyeleotris guttata

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Randall's Shrimp Goby

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Steinitz' Goby

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Beautiful-cheek shrimpgoby

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Blackhead Shrimpgoby

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Amblyeleotris melanocephala

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Delicate Shrimpgoby

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Amblyeleotris delicatulus

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Giant prawn-goby

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Amblyeleotris fontanesii

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Harris's Shrimpgoby

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Amblyeleotris harrisorum

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Long-filament Shrimpgoby

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Marquesas Shrimpgoby

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Recommended companions

Compatible cards from coherent ecosystems with matching parameters.

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De Man's Hermit Crab
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Feather Duster Worm
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Lysmata prima shrimp
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African snapping shrimp
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Armed Snapping Shrimp
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Blood-spotted Hermit Crab
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Bouvier's snapping shrimp
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Camel shrimp
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Chapin's Hermit Crab
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Similar care

Cards with similar requirements, difficulty, habitat, and husbandry profile.

Peacock Prawn-goby

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Twin-spot Shrimpgoby

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Pinkspotted Shrimp Goby

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Masui's Shrimpgoby

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Redspotted shrimpgoby

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Aurora Goby

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Morishita's Shrimpgoby

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Yano's Shrimp Goby

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Bleeker's Shrimpgoby

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Broadband Goby

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Naked-headed Shrimpgoby

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Periophthalma Shrimp Goby

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Neumann's prawn-goby

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Last updated: 06/30/2026
Diagonal-bar Shrimpgoby (Amblyeleotris diagonalis) Care Guide & Tank Setup | Atlarium