Encyclopaedia
Saddleback Clownfish
Amphiprion polymnus
Saddleback Clownfish: marine fish in the family Pomacentridae.
- Family
- Pomacentridae
- Origin
- Tropical oceans and reefsExtra-Amazon South AmericaAfrica and MadagascarAustralia, New Guinea, and Oceania
- Tank use
- Used in 0 tanks
Share
23 °C - 27 °C
8 - 8.5
Marine
All levels
13 cm
Species description
Geographic Origin and Biotope: Western Indo-Pacific, from the South China Sea to northern Australia, New Guinea, and the Solomon Islands. Inhabits silty, sandy lagoons and seagrass beds.
Taxonomy and Morphology: Genus Amphiprion, family Pomacentridae. Oval and laterally compressed dark body. Displays three white bars, with the central bar forming a distinctive saddle-like pattern.
Social Behavior: Associated with sand anemones such as Stichodactyla haddoni and Heteractis crispa. Lives in stable monogamous pairs and actively defends its host.
Coloration and Sexual Dimorphism: Dark brown or black body color with a yellow-orange snout. The three vertical white bars vary in extension. Females are significantly larger and darker than males.
Care, breeding and tankmates
Aquarium Setup: Requires an aquarium of at least 120 liters with an open sandy area and live rock. A carpet anemone (Stichodactyla haddoni) is highly recommended for natural behavior.
Diet and Feeding: Omnivorous. Provide a varied diet consisting of mysis, brine shrimp, high-quality pellets enriched with marine algae, and fresh seaweed.
Water Quality: Stable temperature between 23°C and 27°C, pH between 8.0 and 8.5, salinity 1.020-1.025, KH 8-12, GH 15-25.
Compatibility and Tankmates: Semi-aggressive. Can become highly protective and territorial against tankmates coming too close to its host. Avoid keeping other clownfish species.
Aquarium Reproduction: Protandrous hermaphrodite. Lays eggs on smooth surfaces near the base of the anemone. The male guards and fans the nest constantly.
Risks and Diseases: Susceptible to skin parasites like Brooklynella hostilis and Cryptocaryon irritans (marine ich). Maintain high water quality.
Fish profile
- Temperament
- Semi-aggressive and territorial near host
- Diet
- Omnivorous (frozen marine foods, zooplankton, algae)
- Tank level
- All levels
- Minimum group
- 1
- Adult size
- 13 cm
- Minimum tank volume
- 120 L
- GH
- n/a
- KH
- 8 dKH - 12 dKH
- TDS
- n/a
- Conductivity
- n/a
- Sex ratio
- Singolo, coppia compatibile o gruppo secondo specie
- Feeding frequency
- 1-2 volte al giorno in piccole porzioni
- Bioload
- Medium
- Flow
- Moderate
- Reproduction
- Non comunemente documentata in cattività, richiede vasche mature dedicate.
- Compatibility & tankmates
- Valutare territorialità, taglia adulta e compatibilità barriera prima dell'inserimento.
Ecological Estimates & Biological Models
- Trophic level
- 2.7 ± 0.3 se
- Resilience
- High (less than 15 months)
- Phylogenetic uniqueness (PD50)
- 0.5
- Bayesian Length-Weight
- a = 0.02344, b = 2.98
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.





