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Chinese bitterling (Rhodeus sinensis) — Cyprinidae

Chinese bitterling

Rhodeus sinensis
Family: Cyprinidae
LC · Least Concern
NativeIntroduced

The Chinese bitterling (Rhodeus sinensis) is a brackish-water fish of the family Cyprinidae that grows up to 11 cm.

Length
10.8 cm
Water
Brackish
Diet
Omnivore
Behaviour
Schooling
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Mixed bottom
Danger
Harmless
Range
East Asia; calm, vegetated parts of rivers, ponds and ditches.
Edibility
Rarely eaten

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Description

The Chinese bitterling is a small cyprinid from East Asia, including China and Korea. The species grows to about 11 cm and has a deep, laterally compressed, silvery body; courting males develop handsome pink and blue tints. It inhabits quiet, vegetated parts of rivers, ponds and ditches. Notable is its reproduction: the female uses a long ovipositor to lay her eggs in the gill chamber of a living freshwater mussel, where the larvae grow up protected - a remarkable symbiosis. As an omnivore it feeds on algae, small zooplankton and detritus. The species is harmless to humans.

Frequently asked questions

How do you recognise the Chinese bitterling?

The Chinese bitterling has a torpedo-shaped body, is mainly silver-grey and shows a plain pattern. The female lays the eggs in a living freshwater mussel with a long ovipositor; spawning males pink-blue.

Where does the Chinese bitterling live?

The Chinese bitterling lives in brackish water and is mostly found around mixed bottom. East Asia; calm, vegetated parts of rivers, ponds and ditches.

How big does the Chinese bitterling get?

The Chinese bitterling grows to a maximum of about 11 cm. On average the species is around 4 cm.

Is the Chinese bitterling dangerous to humans?

No, the Chinese bitterling is harmless to humans. None required: this species is harmless to humans.

Is the Chinese bitterling edible?

The Chinese bitterling is rarely eaten.

More photos

Chinese bitterling (Rhodeus sinensis) — Cyprinidae — 2
iNaturalist ((c) fuzzy little duckling, some rights reserved (CC BY-NC))
Chinese bitterling (Rhodeus sinensis) — Cyprinidae — 3
iNaturalist ((c) 李博恒, some rights reserved (CC BY-NC))
Chinese bitterling (Rhodeus sinensis) — Cyprinidae — 4
iNaturalist ((c) Yvan Chen, some rights reserved (CC BY-NC))
Chinese bitterling (Rhodeus sinensis) — Cyprinidae — 5
iNaturalist ((c) Виктория, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Chinese bitterling sourced
Scientific name
Rhodeus sinensis
Family
Cyprinidae

Appearance

Size class
Small verified
Max length (cm)
10.8 verified
Average length (cm)
4.1 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Silver / grey inferred
Pattern
Plain inferred
Tail shape
Forked inferred
Mouth position
Terminal inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
No sourced

Habitat & distribution

Water type
Brackish sourced
Substrate
Mixed bottom sourced
Natural range
East Asia; calm, vegetated parts of rivers, ponds and ditches. inferred
Origin
Native sourced

Behaviour & biology

Diet
Omnivore sourced
Diet (detail)
Algae, small zooplankton and detritus sourced
Social behaviour
Schooling inferred
Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
Yes inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
The female lays the eggs in a living freshwater mussel with a long ovipositor; spawning males pink-blue. sourced

For anglers

Edibility
Rarely eaten sourced
Fishing method
Small in size and barely an angling target; mostly caught incidentally or as baitfish. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced
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 Rhodeus

More from the family Cyprinidae

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