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Ocean animals

Lumpsucker

Amazing fact

Male lumpsuckers turn red during the breeding season.

葛西臨海水族園
Lumpsucker in its habitat (illustration)

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An illustration based on the real animal.

A little discovery to share.

Male lumpsuckers turn red during the breeding season.

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THE REAL WORLD

The real Lumpsucker

Scientific name
Cyclopterus lumpus
Japanese name
ランプサッカー(ヨコヅナダンゴウオ)
Group
Ocean animals
Order
Perciformes
Family
Cyclopteridae
Genus
Cyclopterus
Facts about the real animal.
01

A lumpsucker that lives in the cold North Atlantic. From spring to summer, it comes into shallow water to lay its eggs.

02

Its English name describes a lumpy fish with a sucker. The many bumps all over its body help protect it.

03

On its belly is a sucker formed from its pelvic fins, which it uses to cling to rocks.

How the Lumpsucker lives

They usually live in somewhat deep water. They eat animals that live on the sea floor, among other foods.

葛西臨海水族園

Basic data

Size
Total length: 40 cm
Diet
Benthic organisms and other foods
Range
North Atlantic
葛西臨海水族園

Where the Lumpsucker has been recorded

World map with dots where the Lumpsucker 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
圆鳍鱼
繁體中文
圓鰭魚
Español
Lumpo
Français
Lompe
Deutsch
Seehase
Português (Brasil)
Peixe-lapa
Italiano
Ciclottero
العربية
شحظار
Русский
Пинагор

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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When you meet the Lumpsucker, look for this

  • Watch for it swimming by fluttering its pectoral and tail fins.

Animals do different things from day to day, so you may not always see this.

葛西臨海水族園

EXHIBIT INFORMATION

Places that keep or show the Lumpsucker

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.