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Japanese butterflyfish (Chaetodon nippon) — Chaetodontidae

Japanese butterflyfish

Chaetodon nippon

The Japanese butterflyfish (Chaetodon nippon) is a saltwater fish of the family Chaetodontidae that grows up to 15 cm.

Length
15 cm
Water
Saltwater
Depth
5.0–30.0 m
Activity
Diurnal
Body shape
Flat / disc-shaped
Substrate
Stone or rock
Danger
Harmless
Range
Asia: Taiwan/Ch Taipei, Japan, Ryukyu Is., Korea (North), Korea (South), Philippines and others
Edibility
Commonly eaten

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Description

The Japanese butterflyfish is a butterflyfish (Chaetodontidae) from temperate reef waters of the northwest Pacific, off East Asia. The species grows to about 15 cm and has a deep, brown-yellow body with dark rear fins and a blotch. Unlike many tropical butterflyfishes it tolerates cooler water. As a reef-dweller it lives on rocky and coral reefs and picks small invertebrates, algae and zooplankton. The fish is harmless to humans.

Frequently asked questions

How do you recognise the Japanese butterflyfish?

The Japanese butterflyfish has a flattened, disc-shaped body and is mainly yellow-gold.

Where does the Japanese butterflyfish live?

The Japanese butterflyfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Asia: Taiwan/Ch Taipei, Japan, Ryukyu Is., Korea (North), Korea (South), Philippines and others

How big does the Japanese butterflyfish get?

The Japanese butterflyfish grows to a maximum of about 15 cm.

Is the Japanese butterflyfish dangerous to humans?

No, the Japanese butterflyfish is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.

Is the Japanese butterflyfish edible?

Yes, the Japanese butterflyfish is commonly eaten.

More photos

Japanese butterflyfish (Chaetodon nippon) — Chaetodontidae — 2
iNaturalist ((c) Shu ARAI, some rights reserved (CC BY-NC))
Japanese butterflyfish (Chaetodon nippon) — Chaetodontidae — 3
Randall, John E. (CC0 1.0) via GBIF — USNM
Japanese butterflyfish (Chaetodon nippon) — Chaetodontidae — 4
iNaturalist ((c) Nicola Crockford, some rights reserved (CC BY))
Japanese butterflyfish (Chaetodon nippon) — Chaetodontidae — 5
iNaturalist ((c) Lily Yeung, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Japanese butterflyfish sourced
Scientific name
Chaetodon nippon
Family
Chaetodontidae
Other names
Japanese butterflyfish verified

Appearance

Size class
Small verified
Max length (cm)
15.0 verified
Body shape
Flat / disc-shaped sourced
Dominant colour
Yellow / gold sourced
Tail shape
Rounded inferred

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Min depth (m)
5.0 verified
Max depth (m)
30.0 verified
Natural range
Asia: Taiwan/Ch Taipei, Japan, Ryukyu Is., Korea (North), Korea (South), Philippines and others sourced
Origin
Native inferred

Behaviour & biology

Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Separate sexes inferred
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred

For anglers

Edibility
Commonly eaten inferred
Fishing method
Small in size and barely an angling target; mostly caught incidentally or as baitfish. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified
First aid
This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status. verified

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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