Encyclopaedia
Hector's Goby
Koumansetta hectori
Hector's Goby (Koumansetta hectori): marine reef fish of the family Gobiidae, prized for its unique husbandry requirements.
- Family
- Gobiidae
- Origin
- Red Sea and Western Indian Ocean to the Western Pacific, including the Great Barrier Reef.
- Origin
- Tropical oceans and reefsExtra-Amazon South AmericaNorth AmericaSouth and Southeast Asia
- Tank use
- Used in 0 tanks
Share
22 °C - 28 °C
8 - 8.4
Marine
Bottom
8.5 cm
Species description
Geographical Origin and Habitat: Tropical Indian Ocean and Western Pacific. Inhabits sheltered reef zones and lagoons rich in fine sand and organic sediment down to 20 meters.
Taxonomy and Morphology: Member of the family Gobiidae. Reaches 8.5 cm. Slender, cylindrical body with a rounded tail and large pectoral fins used to hover above the sand.
Social Behavior: Peaceful, shy, and solitary fish. Swims just above the sandy bottom, sifting sand through its gills in search of food.
Coloration and Sexual Dimorphism: Dark body striped longitudinally with a series of prominent bright yellow-orange lines. Displays a distinct yellow-ringed black ocellus (eyespot) on the dorsal fin.
Care, breeding and tankmates
Aquarium Setup: Requires a tank of at least 80 liters (20 gallons) rich in mature live rock and fine sand to allow natural sifting behavior without injury.
Diet and Feeding: Omnivore with a strong herbivorous tendency. Feeds on filamentous algae, detritus, and benthic microfauna. Supplement with algae pellets and fine frozen food.
Water Quality: Temperature 22-28°C (72-82°F), pH 8.0-8.4, specific gravity 1.020-1.025. Requires mature and stable tanks; suffers greatly in newly started systems.
Compatibility and Cohabitation: 100% reef-safe. Ideal for coral-rich tanks. Does not harm any invertebrates. Avoid fast or aggressive tankmates that intimidate it.
Aquarium Breeding: Reproduction is not recorded in home captivity due to the feeding difficulties of pelagic larvae during the first weeks.
Risks and Diseases: Excellent jumper, covering the aquarium is essential. Can waste away quickly if it does not find enough natural algae and microfauna in the substrate.
Fish profile
- Temperament
- Peaceful
- Diet
- Omnivore
- Tank level
- Bottom
- Minimum group
- 1
- Adult size
- 8.5 cm
- Minimum tank volume
- 80 L
- GH
- n/a
- KH
- 8 dKH - 12 dKH
- TDS
- n/a
- Conductivity
- n/a
- Sex ratio
- Solitary or in mated pairs.
- Feeding frequency
- Feed multiple times daily.
- Bioload
- Low
- Flow
- Low
- Jump risk
- Covered tank required
- Reproduction
- Monogamous pairs. Breeding in captivity is extremely rare and undocumented.
- Compatibility & tankmates
- Very peaceful and shy. Best kept with calm tankmates. Will sift sand and graze on hair algae.
Ecological Estimates & Biological Models
- Trophic level
- 2.1 ± 0.1 se
- Resilience
- High (less than 15 months)
- Phylogenetic uniqueness (PD50)
- 0.625
- Bayesian Length-Weight
- a = 0.00741, b = 3.09
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.





