Black-Lined Sleeper Goby Care Guide
Valenciennea helsdingenii is an Indo-West Pacific sand-sifting goby with two dark stripes; it is a relatively rare, monogamous mound-builder.
Compiled by Aquairi from published sources · Published · Updated
Overview
Valenciennea helsdingenii, the black-lined or twostripe sleeper goby, is a marine fish of the family Gobiidae described by Bleeker in 1858. It is a sand-sifting goby with a white body marked by two horizontal black lines and is regarded by FishBase as a relatively rare species.
Taxonomy
- Family: Gobiidae
- Genus: Valenciennea
- Scientific name: Valenciennea helsdingenii
- Authority: Bleeker, 1858
Habitat
The species ranges across the Indo-West Pacific, from the southern Red Sea and East Africa to Indonesia, north to southern Japan and south to the Great Barrier Reef. It is reef-associated, found over silty flat sand patches and rubble substrates, often on outer reef drop-offs and occasionally in lagoons, at 1 to 45 m and usually 1 to 30 m.
Tank requirements
- Minimum tank volume: 200 L
- Temperature: 24-26 °C (75-79 °F)
- pH: 8.1-8.4
- GH: 8-12 °dGH
- Maximum size: 25 cm TL (common 18 cm)
- Lifespan: 3-6 years
Diet
Valenciennea helsdingenii is a carnivore. It feeds by sifting mouthfuls of sand to extract small burrowing animals; a fine sand bed and feeding about twice daily support this behaviour in captivity.
Compatibility
This is a peaceful, bottom-dwelling goby found singly or in pairs. It suits reef tanks with calm tank mates such as clownfish, cardinalfish and wrasses, and should not be kept with predators.
Breeding
The species is monogamous. In aquaria, eggs hatched two days after spawning, and 35 days later the larvae reached 5.25 mm.
Conservation status
IUCN Red List: Least Concern, assessed 11 March 2015.
Breeding Valenciennea helsdingenii (Black-Lined Sleeper Goby)
Overview
Valenciennea helsdingenii (Bleeker, 1858), the twostripe or black-lined sleeper goby, is an Indo-West Pacific sand sifter ranging from the southern Red Sea and East Africa to southern Japan and the Great Barrier Reef. FishBase gives a maximum size of 25.0 cm TL (common length 18.0 cm) and describes a mound-building species found singly or in pairs over silty sand and rubble, feeding by sifting mouthfuls of sand. It is monogamous and has been observed spawning in aquaria.
Sexing
The species is monogamous and usually seen in pairs. External sexing is unreliable, so pairs are formed from two fish that settle a shared burrow; a ripe female develops a fuller abdomen as eggs mature ahead of spawning.
Conditioning
This sand sifter feeds on small burrowing animals and sits at an estimated trophic level of about 3.4. A pair is conditioned over a deep, fine sand bed that allows constant sifting, supplemented with frequent meaty feeds to bring the pair into breeding condition.
Breeding Setup
Given the species' size, a spacious system with a deep sand bed and rock to build under is required; the knowledge base lists a minimum volume of 200 L. Parameters are temperature 24-26 degrees C, pH 8.1-8.4 and moderate flow. The pair constructs mound-capped burrows that serve as shelter and spawning sites.
Spawning Behavior & Trigger
The pair spawns inside a burrow, attaching a demersal egg mass to the ceiling, following the Valenciennea pattern of the female building a mound while the male tends the clutch. A stable, well-fed pair with secure burrows is the main prerequisite for spawning in aquaria.
Egg & Fry Care
FishBase notes that in aquaria the eggs hatch about 2 days after spawning, and that 35 days after hatching the larvae had reached 5.25 mm, indicating a prolonged planktonic stage. The male tends the eggs in the burrow until hatching, after which the larvae are planktonic; raising them through settlement remains difficult and no routine protocol is established.
Common Challenges
- Providing a deep, stable sand bed for an active mound-building sifter.
- Sustaining the heavy feeding demand needed to keep a large pair in spawning condition.
- Rearing the slow-growing planktonic larvae through their extended pelagic phase.