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Eight banded butterfly fish (Chaetodon octofasciatus) — Chaetodontidae

Eight banded butterfly fish

Chaetodon octofasciatus
LC · Least Concern

The Eight banded butterfly fish (Chaetodon octofasciatus) is a saltwater fish of the family Chaetodontidae that grows up to 12 cm.

Length
12 cm
Water
Saltwater
Depth
3.0–20.0 m
Diet
Carnivore
Behaviour
Small groups
Activity
Diurnal
Body shape
Flat / disc-shaped
Substrate
Stone or rock
Danger
Harmless
Range
Indo-West Pacific; coral-rich sheltered lagoon and coastal reefs.
Edibility
Not eaten

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Description

The eightband butterflyfish is a butterflyfish of the family Chaetodontidae from the Indo-West Pacific. The species grows to about 12 cm and has a deep, yellow-white, disc-shaped body with eight narrow, dark vertical bands. It swims in pairs in coral-rich parts of sheltered lagoon and inshore reefs; juveniles stay in groups among branching coral. As a specialised coral feeder it feeds almost exclusively on coral polyps, making it highly dependent on healthy coral. Owing to this specialisation it is difficult to keep in the aquarium. The species is harmless to humans.

Frequently asked questions

How do you recognise the Eight banded butterfly fish?

The Eight banded butterfly fish has a flattened, disc-shaped body, is mainly yellow-gold and shows a vertical stripes pattern. Eight narrow dark vertical bars; specialised coral eater, highly dependent on healthy coral.

Where does the Eight banded butterfly fish live?

The Eight banded butterfly fish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Indo-West Pacific; coral-rich sheltered lagoon and coastal reefs.

How big does the Eight banded butterfly fish get?

The Eight banded butterfly fish grows to a maximum of about 12 cm.

Is the Eight banded butterfly fish dangerous to humans?

No, the Eight banded butterfly fish is harmless to humans. None required: this species is harmless to humans.

Is the Eight banded butterfly fish edible?

The Eight banded butterfly fish is not usually eaten.

More photos

Eight banded butterfly fish (Chaetodon octofasciatus) — Chaetodontidae — 2
Dwight Baker (CC BY-NC 4.0) via GBIF — iNaturalist
Eight banded butterfly fish (Chaetodon octofasciatus) — Chaetodontidae — 3
Wikimedia Commons — Bernard DUPONT from FRANCE (CC BY-SA 2.0)
Eight banded butterfly fish (Chaetodon octofasciatus) — Chaetodontidae — 4
Wikimedia Commons — The original uploader was Aquaimages at English Wikipedia. (CC BY-SA 2.5)
Eight banded butterfly fish (Chaetodon octofasciatus) — Chaetodontidae — 5
Wikimedia Commons — Amada44 (CC BY-SA 3.0)
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All data

Identification

English name
Eight banded butterfly fish verified
Scientific name
Chaetodon octofasciatus
Family
Chaetodontidae
Other names
Eight striped butterflyfish; Eightband butterflyfish; Eight-banded butterflyfish; Eight-striped butterflyfish; Eight-banded coralfish verified

Appearance

Size class
Small verified
Max length (cm)
12.0 verified
Body shape
Flat / disc-shaped sourced
Dominant colour
Yellow / gold inferred
Pattern
Vertical bars inferred
Tail shape
Straight inferred
Mouth position
Terminal inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Min depth (m)
3.0 verified
Max depth (m)
20.0 verified
Natural range
Indo-West Pacific; coral-rich sheltered lagoon and coastal reefs. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Almost exclusively coral polyps sourced
Social behaviour
Small groups inferred
Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Eight narrow dark vertical bars; specialised coral eater, highly dependent on healthy coral. sourced

For anglers

Edibility
Not eaten sourced
Fishing method
Not a target species for angling; at most an incidental catch or usable as baitfish. inferred
Regulations source
FishBase ↗ inferred

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

Same genus Chaetodon

More from the family Chaetodontidae

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