Encyclopaedia
Neon Damselfish
Pomacentrus coelestis
Active and hardy damselfish (9 cm) from the Indo-Pacific, featuring a brilliant metallic neon-blue body with yellow caudal and anal fins.
- Family
- Pomacentridae
- Origin
- Indo-Pacifico (dalle isole Cocos-Keeling alle isole Line e al Giappone)
- Origin
- Tropical oceans and reefsExtra-Amazon South AmericaEurope, Mediterranean, and West AsiaEast Asia
- Tank use
- Used in 0 tanks
Share
24 °C - 28 °C
8.1 - 8.4
Marine
Bottom and middle
9 cm
Species description
Geographical Origin and Habitat: Distributed across the Indo-Pacific, from Cocos-Keeling Islands to the Line Islands, north to southern Japan, and throughout the Great Barrier Reef. Found in shallow lagoons.
Taxonomy and Morphology: Member of the family Pomacentridae. Features a slightly elongated, compressed body. Reaches a maximum standard length of 9 cm. Distinctive sleek dorsal profile.
Social Behavior: Highly active and energetic species. Exhibits strong territorial behaviors, defending rocky crevices and caves against conspecifics and similar-looking intruders.
Coloration and Sexual Dimorphism: Bright, metallic neon-blue body coloration. Caudal and anal fins are marked with a soft yellow tone. No distinct external sexual dimorphism is present.
Care, breeding and tankmates
Aquarium Setup: Requires a minimum tank volume of 100 liters with plenty of rockwork to allow the fish to establish distinct territories and retreat zones.
Diet and Feeding: Omnivorous diet. Provide high-quality small flakes, pellets, frozen mysis, brine shrimp, and preparations containing marine algae.
Water Quality: Stable reef water quality: temperature 24-28 °C, pH 8.1-8.4, and salinity range of 1.020-1.025 with moderate filtration.
Compatibility and Cohabitation: Best kept with active, robust reef tankmates. Avoid housing with shy, slow-moving, or long-finned species that may get harassed.
Aquarium Breeding: Oviparous. Spawns adhesive eggs on rocky surfaces or inside crevices. The male guards the nest and fans the clutch until hatching.
Risks and Diseases: Exceptionally hardy species, resistant to typical marine diseases. Highly suitable for beginner aquarists starting a saltwater system.
Fish profile
- Temperament
- Territoriale
- Diet
- Onnivoro
- Tank level
- Bottom and middle
- Minimum group
- 1
- Adult size
- 9 cm
- Minimum tank volume
- 100 L
- GH
- n/a
- KH
- n/a
- TDS
- n/a
- Conductivity
- n/a
- Sex ratio
- Harem
- Feeding frequency
- Giornaliera
- Bioload
- Basso
- Flow
- Medio
- Reproduction
- Ermafrodita. Depone uova adesive su rocce o conchiglie vuote. Il maschio si occupa delle cure parentali fino alla schiusa.
- Compatibility & tankmates
- Aggressivo e territoriale con i conspecifici in piccoli acquari. Può convivere con pesci robusti e attivi.
Ecological Estimates & Biological Models
- Trophic level
- 3.2 ± 0.28 se
- Resilience
- High (less than 15 months)
- Phylogenetic uniqueness (PD50)
- 0.5
- Bayesian Length-Weight
- a = 0.01413, b = 2.95
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.





