Common name: Alexander's damsel
General information
Alexandera's Damsel, scientifically known as Pomacentrus alexanderae, is a small and vibrant member of the damselfish family. This species is named after ichthyologist Helen K. Larson's mother, Alexandera. It is not as commonly found in the aquarium trade as other damselfish but is gaining popularity due to its striking appearance and interesting behavior.
Details
- Recommended minimum tank volume
- 75 liter (20 gallons)
- Salinity
- S.G. 1.020 to 1.025
- Temperature
- 24 to 27 °C (75 to 81 °F)
- Acidity
- pH 8.1 to 8.4
- Average size
- 9 cm (3½″)
- Care level
- Moderate to easy
- Diet
- Omnivore
- Social
- School
- Reefsafe
- Yes
- Aggression
- Peaceful
- Captive bred
- No
Taxonomy
- KingdomAnimalsAnimalia
- PhylumChordatesChordata
- ClassRay-finned FishesActinopterygii
- OrderPerch-like FishesPerciformes
- FamilyDamselfishPomacentridae
- GenusDamselfishPomacentrus
- SpeciesAlexander's damselPomacentrus alexanderae Evermann & Seale, 1907
Care
Alexandera's Damsel is a hardy species that can adapt to a variety of tank conditions, making it suitable for both novice and experienced aquarists. They thrive in well-established aquariums with plenty of live rock for hiding and grazing. While they are generally peaceful, they can become territorial, especially towards conspecifics or similar-sized fish. A varied diet of meaty foods and herbivore preparations will help maintain their health and coloration.
Reproduction
Like many damselfish, Alexandera's Damsel is an oviparous species, with distinct pairing during breeding. They lay eggs on a flat surface, which are then guarded and aerated by the male until they hatch. Breeding in captivity can be achieved with careful attention to water quality and diet.
Habitat
Alexandera's Damsel is native to the Western Pacific, where it is typically found in shallow, coral-rich areas and lagoons. They are often observed in small groups or pairs and can be found at depths ranging from the surface to about 12 meters.
Geographical distribution includes areas such as the Philippines, Indonesia, and the Solomon Islands, where they contribute to the biodiversity and complexity of coral reef ecosystems.