Andaman Damsel (Pomacentrus alleni) Care Guide
Pomacentrus alleni is a small reef damselfish from the eastern Indian Ocean, reaching about 6 cm and feeding as an omnivore.
Overview
Pomacentrus alleni is a small marine damselfish of the family Pomacentridae. FishBase lists its common name as the Andaman damsel and records a maximum size of 6.0 cm total length. It is a reef-associated species with a laterally compressed, fusiform body.
Taxonomy
- Family: Pomacentridae
- Genus: Pomacentrus
- Scientific name: Pomacentrus alleni
Habitat
According to FishBase the species occurs in the eastern Indian Ocean, notably the Similan Island area of Thailand, with reports from Indonesia. It inhabits tropical reefs at depths of 3–15 m, typically over rubble and dead reef on outer slopes and inshore areas, usually in small groups along the edges of reef to sand.
Tank requirements
- Minimum tank volume: 150 L (about 40 gal)
- Temperature: 24–26 °C (75–79 °F)
- pH: 8.1–8.4
- GH: 8–12 °dGH
- Lifespan: 5–10 years
Diet
FishBase classifies Pomacentrus alleni as an omnivore with a trophic level of 2.7. In aquaria it accepts a varied diet of prepared, frozen and small live foods alongside algae-based feeds.
Compatibility
Like most Pomacentrus, this is a semi-aggressive, mid-water fish that can become territorial in smaller tanks. Robust tankmates such as tangs, wrasses and (with caution) triggers are generally suitable, while slow, shy fish and additional damsels in small tanks are best avoided.
Breeding
Reproduction is oviparous with distinct pairing. FishBase notes the eggs are demersal and adhere to the substrate, and that males guard and aerate them. Captive breeding is considered an expert-level undertaking.
Conservation status
IUCN Red List: Least Concern (assessed 23 September 2021, per FishBase).