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Damselfish (Acanthochromis polyacanthus) — Pomacentridae

Damselfish

Acanthochromis polyacanthus
Family: Pomacentridae
LC · Least Concern

The Damselfish (Acanthochromis polyacanthus) is a saltwater fish of the family Pomacentridae that grows up to 16 cm.

Length
16 cm
Water
Saltwater
Depth
1–65 m
Diet
Omnivore
Behaviour
Small groups
Activity
Diurnal
Body shape
Flat / disc-shaped
Substrate
Stone or rock
Danger
Harmless
Range
Western Pacific; inshore and offshore coral reefs.
Edibility
Not eaten

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Description

The spiny chromis is a damselfish of the family Pomacentridae from the western Pacific. The species grows to about 16 cm and has a stocky body grading from dark at the head to lighter at the tail. Adults inhabit inshore and offshore coral reefs. Notably, this is the only damselfish without a pelagic larval stage: the young hatch directly as small fish and stay with the parents, who protect and defend the brood for weeks. As an omnivore it feeds on zooplankton, algae and small invertebrates. The species is harmless to humans.

Frequently asked questions

How do you recognise the Damselfish?

The Damselfish has a flattened, disc-shaped body, is mainly brown and shows a plain pattern. The only damselfish without a pelagic larval stage; the parents protect the brood for weeks.

Where does the Damselfish live?

The Damselfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Western Pacific; inshore and offshore coral reefs.

How big does the Damselfish get?

The Damselfish grows to a maximum of about 16 cm.

Is the Damselfish dangerous to humans?

No, the Damselfish is harmless to humans. None required: this species is harmless to humans.

Is the Damselfish edible?

The Damselfish is not usually eaten.

More photos

Damselfish (Acanthochromis polyacanthus) — Pomacentridae — 2
iNaturalist ((c) Sam, some rights reserved (CC BY-NC))
Damselfish (Acanthochromis polyacanthus) — Pomacentridae — 3
Wikimedia Commons — Bernard DUPONT from FRANCE (CC BY-SA 2.0)
Damselfish (Acanthochromis polyacanthus) — Pomacentridae — 4
iNaturalist ((c) François Libert, some rights reserved (CC BY-NC-SA))
Damselfish (Acanthochromis polyacanthus) — Pomacentridae — 5
iNaturalist ((c) Mark Rosenstein, some rights reserved (CC BY-NC))

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All data

Identification

English name
Damselfish verified
Scientific name
Acanthochromis polyacanthus
Family
Pomacentridae
Other names
Spiny chromis; Spiny-tail puller; Spiny puller; Spotty-tail verified

Appearance

Size class
Medium verified
Max length (cm)
16 verified
Body shape
Flat / disc-shaped sourced
Dominant colour
Brown
Pattern
Plain
Tail shape
Forked
Mouth position
Terminal
Lips
Thick / fleshy
Barbels
No sourced
Dorsal fins
One continuous
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Min depth (m)
1 verified
Max depth (m)
65 verified
Natural range
Western Pacific; inshore and offshore coral reefs.
Origin
Native sourced

Behaviour & biology

Diet
Omnivore sourced
Diet (detail)
Zooplankton, algae and small invertebrates sourced
Social behaviour
Small groups
Territorial
Yes
Activity
Diurnal
Reproduction
Separate sexes sourced
Sexual dimorphism
No
Seasonality
Present year-round in its habitat; no pronounced seasonality known.
Special features
The only damselfish without a pelagic larval stage; the parents protect the brood for weeks. sourced

For anglers

Edibility
Not eaten sourced
Fishing method
Fishing with natural bait (fish, shrimp, worm) or lures close to reef and rock structures.
Regulations source

Safety

Danger to humans
Harmless sourced
First aid
None required: this species is harmless to humans. sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

More from the family Pomacentridae

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