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Freshwater animals

Blue candiru

Amazing fact

The blue candiru has long, threadlike extensions on its dorsal and pectoral fins.

Florida Museum of Natural History
Blue candiru in its habitat (illustration)

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An illustration based on the real animal.

A little discovery to share.

The blue candiru has long, threadlike extensions on its dorsal and pectoral fins.

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THE REAL WORLD

The real Blue candiru

Scientific name
Cetopsis coecutiens
Japanese name
ブルーカンディル
Group
Freshwater animals
Order
Siluriformes
Family
Cetopsidae
Genus
Cetopsis
Facts about the real animal.
01

A fish that lives in the Amazon River.

02

It can barely see, but when it smells blood, it attacks prey in groups.

How the Blue candiru lives

It is a carnivorous catfish that eats other fish.

栃木県なかがわ水遊園

Basic data

Range
Amazon River
鳥羽水族館

Where the Blue candiru has been recorded

World map with dots where the Blue candiru has been recorded
Each dot marks a place with observations or specimens shared on GBIF. Some records are of animals that strayed or were brought by people, so the dots are not always where the animal lives.

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

简体中文
亚马逊鲸鲶
繁體中文
亞馬遜鯨鯰

Names come from Wikidata and iNaturalist records. Where a language has no recorded name, we use the scientific name.

Sources and how we check

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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