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Big-scaled redfin (Tribolodon hakonensis) — Cyprinidae

Big-scaled redfin

Tribolodon hakonensis
Family: Cyprinidae
LC · Least Concern

The Big-scaled redfin (Tribolodon hakonensis) is a fish that lives in both fresh and salt water of the family Cyprinidae that grows up to 45 cm.

Length
45 cm
Water
Euryhaline
Diet
Omnivore
Behaviour
Schooling
Activity
Diurnal
Substrate
Stone or rock
Danger
Harmless
Range
East Asia (Japan, Korea and surroundings), in rivers and coastal water; exceptional among the cyprinids in that it migrates into the sea.
Edibility
Commonly eaten

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Description

The big-scaled redfin is a robust cyprinid of the family Leuciscidae reaching about 45 cm and exceptional because, unlike almost all other cyprinids, it can live in the sea and tolerates the saltwater transition. The silvery-grey body develops several orange-red lengthwise stripes along the flank in the breeding season. The species comes from East Asia and lives in rivers and coastal water; many populations are anadromous and run up the river in spring to spawn on gravel bars. As an omnivore it eats insects, crustaceans, worms, algae and small fish. It is a common and valued sport and food fish in Japan.

Frequently asked questions

How do you recognise the Big-scaled redfin?

The Big-scaled redfin is mainly silver-grey and shows a horizontal stripes pattern. Robust cyprinid and the only one that lives in the sea; develops orange-red longitudinal stripes along the flank during spawning.

Where does the Big-scaled redfin live?

The Big-scaled redfin lives in both fresh and salt water and is mostly found around stony or rocky ground. East Asia (Japan, Korea and surroundings), in rivers and coastal water; exceptional among the cyprinids in that it migrates into the sea.

How big does the Big-scaled redfin get?

The Big-scaled redfin grows to a maximum of about 45 cm.

Is the Big-scaled redfin dangerous to humans?

No, the Big-scaled redfin is harmless to humans. None required: this species is harmless to humans.

Is the Big-scaled redfin edible?

Yes, the Big-scaled redfin is commonly eaten.

More photos

Big-scaled redfin (Tribolodon hakonensis) — Cyprinidae — 2
iNaturalist ((c) milesnojiri, some rights reserved (CC BY-NC))
Big-scaled redfin (Tribolodon hakonensis) — Cyprinidae — 3
iNaturalist ((c) Amaël Borzée, some rights reserved (CC BY-NC))
Big-scaled redfin (Tribolodon hakonensis) — Cyprinidae — 4
Wikimedia Commons — Kumon (CC BY 2.0)
Big-scaled redfin (Tribolodon hakonensis) — Cyprinidae — 5
Wikimedia Commons — Apple2000 (CC BY 3.0)
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All data

Identification

English name
Big-scaled redfin verified
Scientific name
Tribolodon hakonensis
Family
Cyprinidae

Appearance

Size class
Large
Max length (cm)
45 verified
Dominant colour
Silver / grey sourced
Pattern
Horizontal stripes sourced
Tail shape
Forked inferred
Mouth position
Terminal inferred
Lips
Thick / fleshy inferred
Barbels
No verified
Dorsal fins
One continuous sourced
Dorsal spines
No verified

Habitat & distribution

Water type
Euryhaline verified
Substrate
Stone or rock verified
Natural range
East Asia (Japan, Korea and surroundings), in rivers and coastal water; exceptional among the cyprinids in that it migrates into the sea. verified
Origin
Native verified

Behaviour & biology

Diet
Omnivore verified
Diet (detail)
Insects, crustaceans, worms, algae and small fishes sourced
Social behaviour
Schooling verified
Territorial
No verified
Activity
Diurnal inferred
Reproduction
Separate sexes verified
Sexual dimorphism
Yes verified
Seasonality
Anadromous populations migrate up the river in spring to spawn on gravel banks; the fish then turn orange-red. sourced
Special features
Robust cyprinid and the only one that lives in the sea; develops orange-red longitudinal stripes along the flank during spawning. sourced

For anglers

Edibility
Commonly eaten verified
Fishing method
Angling with bait or fly in rivers and river mouths; a prized sport fish in Japan sourced
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified
First aid
None required: this species is harmless to humans. sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Tribolodon

More from the family Cyprinidae

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