Multicolorfin rainbowfish
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An illustration based on the real animal.
A little discovery to share.
Some multicolorfin rainbowfish change from female to male as they grow.
THE REAL WORLD
The real Multicolorfin rainbowfish
- Scientific name
- Parajulis poecilepterus
- Japanese name
- キュウセン
- Group
- Ocean animals
- Order
- Labriformes
- Family
- Labridae
- Genus
- Parajulis
Where the name “Multicolorfin rainbowfish” comes from
Its Japanese name refers to the number of lengthwise stripes on its body.
宇久井ビジターセンターIt is also listed under the scientific name Halichoeres poecilopterus.
It lives along Japan's coasts from Hokkaido to Kyushu, and off the Korean Peninsula, Taiwan, and China's Fujian and Guangdong provinces.
How the Multicolorfin rainbowfish lives
In Toyama Bay, it begins to appear after spring. It rests by burying itself in sand or lying on its side. It is said to hibernate in winter, but where it does so in Toyama Bay is unknown.
公益財団法人 環日本海環境協力センター鶴岡市立加茂水族館Basic data
- Range
- Hokkaido to southern Kyushu, the Seto Inland Sea, Ariake Sea, Izu Islands, southern and eastern Korean Peninsula, Taiwan, and elsewhere
Where the Multicolorfin rainbowfish 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
- キュウセン
- 简体中文
- 花鳍副海猪鱼
- 繁體中文
- 花鰭副海豬魚
- 한국어
- 용치놀래기
- Español
- Arcoíris de aleta multicolor
- Português (Brasil)
- Bodião-de-barbatana-multicolorida
- ไทย
- ปลาเหลืองหิน
Names come from Wikidata and iNaturalist records. Where a language has no recorded name, we use the scientific name.
Sources and how we check
- 鳥羽水族館 — キュウセンChecked: 2026-11-04
- 鶴岡市立加茂水族館 — キュウセンChecked: 2026-11-07
- 宇久井ビジターセンター — キュウセンChecked: 2026-11-07
- 公益財団法人 環日本海環境協力センター — キュウセン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.
This page was translated from the original Japanese with the help of AI.
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