Wrought iron butterflyfish
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An illustration based on the real animal.
A little discovery to share.
The wrought iron butterflyfish lives on rocky reefs and coral reefs.
THE REAL WORLD
The real Wrought iron butterflyfish
- Scientific name
- Chaetodon daedalma
- Japanese name
- ユウゼン
- Group
- Ocean animals
- Order
- Chaetodontiformes
- Family
- Chaetodontidae
- Genus
- Chaetodon
A butterflyfish with calm black-and-white colors. Its name is said to come from its pattern, which looks like yuzen, a traditional Japanese kimono dyeing style.
Its small mouth is packed with fine teeth like the bristles of a toothbrush, which it uses to scrape algae and other food off rocks.
It is usually found in pairs, but in early summer around the Ogasawara Islands, groups called "yuzen balls" can be seen.
Basic data
- Size
- Total length: 15 cm
- Diet
- Benthic organisms, algae, and other foods
- Range
- Izu, Ogasawara, and Daito Islands
- Conservation status in Japan
- Data Deficient (DD)Ministry of the Environment of Japan, Marine Red List (2017)
Where the Wrought iron butterflyfish has been recorded
Records: GBIF.org (CC0 and CC BY 4.0 records, retrieved 2026-11-07). Map: Natural EarthSee the records on GBIF
Watch wild animals from a distance. Do not touch or feed them, and take care of the places where they live.
Names around the world
- 日本語
- ユウゼン
- 简体中文
- 绣蝴蝶鱼
- 繁體中文
- 繡蝴蝶魚
- Français
- Poisson-papillon soyeux noir
- Deutsch
- Eisen-Falterfisch
- Português (Brasil)
- Peixe-borboleta-ferro
- Italiano
- Pesce farfalla ferroso
- Русский
- Бабочка-рыцарь
Names come from Wikidata and iNaturalist records. Where a language has no recorded name, we use the scientific name.
Sources and how we check
- 葛西臨海水族園 — ユウゼンChecked: 2026-11-03
- Ministry of the Environment of Japan, Marine Red List (2017)Checked: 2026-11-07
We check each fact against its source. The illustrations simplify how the real animal looks.
The classification (class, order, family, genus) follows Wikidata records, checked against GBIF. Classifications can change as research goes on.
The basic data are the values given in each source. They vary with how the animal is measured, whether it is male or female, and whether it lives in the wild or in captivity.
The conservation status in Japan is the category in the Red Lists of the Ministry of the Environment of Japan, which assess the risk of extinction for wild animals in Japan.
This page was translated from the original Japanese with the help of AI.
Report a mistakeEXHIBIT INFORMATION
Places that keep or show the Wrought iron butterflyfish
Zoos, aquariums and other places whose official websites say they keep or show this animal.
Kanto
Displays can change with the animals’ health and the seasons. Check each facility’s official website before you go.
RELATIVES
Others in Chaetodontidae
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