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Canary Fangblenny
Meiacanthus oualanensis
A magnificent bright yellow fish, active midwater swimmer, equipped with venomous fangs used strictly for defense against predators.
- Family
- Blenniidae
- Origin
- Pacifico centro-occidentale: prevalentemente dalle lagune delle isole Figi.
- Origin
- Tropical oceans and reefs
- Tank use
- Used in 0 tanks
Share
22 °C - 27 °C
8 - 8.4
Marine
All levels
12 cm
Species description
Geographical Origin and Habitat: Western Central Pacific: endemic to the Fiji Islands. Inhabits shallow, protected sandy lagoons and patch reefs at depths of 1 to 15 meters.
Taxonomy and Morphology: Member of the family Blenniidae. Features venom glands at the base of large hollow canine fangs in the lower jaw. Reaches a maximum length of 12 cm.
Social Behavior: Lively and curious. Spends much of its time hovering in midwater searching for zooplankton, retreating to the rockwork only to sleep or when threatened.
Coloration and Sexual Dimorphism: Uniform bright canary-yellow coloration across the entire body, head, and fins. Caudal fin features long lyre-shaped outer lobes. Adult males have longer caudal filaments.
Care, breeding and tankmates
Aquarium Setup: Demands a tank of at least 115 liters with numerous rocky crevices. A tight-fitting lid is required to prevent jumps.
Diet and Feeding: Planctivorous omnivore. Feed small frozen foods (brine shrimp, mysis, copepods) and fine dry pellets. Include vegetable-based foods for vitamin enrichment.
Water Quality: Keep parameters stable. Temperature 22-27°C, pH 8.0-8.4, salinity SG 1.020-1.026. GH 15-25. Moderate water movement is beneficial.
Compatibility and Cohabitation: 100% reef safe, excellent for coral reef aquariums. Its fangs protect it from larger predators. Keep singly to prevent territorial aggression.
Aquarium Breeding: Successfully bred in captivity. Adhesive eggs are laid in rocky crevices and guarded by the male until hatching.
Risks and Diseases: Very hardy. High risk of jumping if the tank is uncovered. Bites are painful to humans; handle with care during maintenance.
Fish profile
- Temperament
- Pacifico, attivo nuotatore
- Diet
- Omnivoro planctivoro, accetta congelato, liofilizzato e piccoli granuli
- Tank level
- All levels
- Minimum group
- 1
- Adult size
- 12 cm
- Minimum tank volume
- 115 L
- GH
- n/a
- KH
- 8 dKH - 12 dKH
- TDS
- n/a
- Conductivity
- n/a
- Sex ratio
- Singolo o coppia affiatata
- Feeding frequency
- 2 volte al giorno
- Bioload
- Low
- Flow
- Moderato
- Jump risk
- Covered tank required
- Reproduction
- Depone uova adesive all'interno di caverne o tubi. Il maschio custodisce la covata. Riprodotto in acquacoltura.
- Compatibility & tankmates
- Reef Safe al 100%. Ideale per acquari marini comunitari. Può lottare con conspecifici dello stesso sesso.
Ecological Estimates & Biological Models
- Trophic level
- 3.5 ± 0.5 se
- Resilience
- High (less than 15 months)
- Phylogenetic uniqueness (PD50)
- 0.5
- Bayesian Length-Weight
- a = 0.00575, b = 3.06
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.





