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Goldeneye Blenny

Ecsenius ops

A marine blenny famous for its bright yellow eye rings and excellent algae grazing behavior.

Family
Blenniidae
Origin
Oceano Pacifico centrale: endemico delle acque dell'Indonesia e scogliere limitrofe.
Origin
Tropical oceans and reefsSouth and Southeast Asia
Tank use
Used in 0 tanks

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Species challenges
Water Temperature

22 °C - 26 °C

pH Value

8.1 - 8.4

Water type

Marine

Tank level

Bottom

Adult size

5 cm

Species description

Geographical Origin and Habitat: Western Central Pacific: endemic to the waters of Indonesia.

Taxonomy and Morphology: A member of the Blenniidae family, it features a slender, laterally compressed body design. Adults reach a maximum size of approximately 5.0 cm.

Social Behavior: Shows a highly active and peaceful behavior. Dominant males may display minor intraspecific territoriality during breeding parading.

Coloration and Sexual Dimorphism: The coloration is exceptionally vivid, characteristic of reef-dwelling wrasses. Sexual dimorphism is prominent, with males showing brighter colors.

Care, breeding and tankmates

Aquarium Setup: Requires a tank of at least 80.0 liters with plenty of live rock shelters. A tight-fitting lid is mandatory to prevent jumping out.

Diet and Feeding: Carnivore. Feed zooplankton, frozen foods like mysis and brine shrimp, alongside high-quality marine pellets.

Water Quality: Reef parameters with pH 8.1-8.4, gravity 1.023-1.025, and low nitrates are critical.

Compatibility and Cohabitation: Peaceful reef companion. Suitable for community tanks. Keep only one male per aquarium to avoid fighting.

Aquarium Breeding: Egg scatterer. Protogynous hermaphrodite. Spawning in private aquaria has not been documented successfully.

Risks and Diseases: High risk of jumping. Prone to skin damage if stressed by aggressive tankmates. Maintain stable water conditions.

Fish profile

Temperament
Pacifico, pacifico e territoriale solo per il proprio anfratto preferito.
Diet
Erbivoro. Si ciba principalmente di alghe e micro-pellicola organica. Offrire spirulina.
Tank level
Bottom
Minimum group
1
Adult size
5 cm
Minimum tank volume
80 L
GH
n/a
KH
n/a
TDS
n/a
Conductivity
n/a
Sex ratio
Singolo
Feeding frequency
2 volte al giorno
Bioload
Low
Flow
Moderato
Jump risk
Covered tank required
Reproduction
Non riprodotto commercialmente in acquario. Oviparo.
Compatibility & tankmates
Completamente reef-safe. Non reca disturbo a coralli o tridacne.

Ecological Estimates & Biological Models

Trophic level
2 ± 0 se
Resilience
High (less than 15 months)
Phylogenetic uniqueness (PD50)
0.5
Bayesian Length-Weight
a = 0.00776, b = 3
VulnerabilityLow vulnerability (10 / 100)

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