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Chinese emperor (Lethrinus haematopterus) — Lethrinidae

Chinese emperor

Lethrinus haematopterus
Family: Lethrinidae

The Chinese emperor (Lethrinus haematopterus) is a saltwater fish of the family Lethrinidae that grows up to 45 cm.

Length
45 cm
Water
Saltwater
Diet
Carnivore
Behaviour
Small groups
Body shape
Torpedo-shaped
Substrate
Stone or rock
Danger
Harmless
Range
Northwest Pacific; coastal waters.
Edibility
Commonly eaten

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Description

The Chinese emperor is an emperor (Lethrinidae) from the northwestern Pacific. The species has an elongate, silvery body with a pointed snout and can change colour quickly with mood and when hunting. It lives near the bottom in coastal waters over sand, mud and reef bottoms. As a predator it cracks hard-shelled prey such as molluscs, crustaceans and sea urchins with its jaws, supplemented with small fishes. It is a food fish. The species is harmless to humans.

Frequently asked questions

How do you recognise the Chinese emperor?

The Chinese emperor has a torpedo-shaped body, is mainly silver-grey and shows a plain pattern. Can change colour rapidly; crushes hard-shelled prey with strong jaws.

Where does the Chinese emperor live?

The Chinese emperor lives in the sea (marine waters) and is mostly found around stony or rocky ground. Northwest Pacific; coastal waters.

How big does the Chinese emperor get?

The Chinese emperor grows to a maximum of about 45 cm.

Is the Chinese emperor dangerous to humans?

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

Is the Chinese emperor edible?

Yes, the Chinese emperor is commonly eaten.

More photos

Chinese emperor (Lethrinus haematopterus) — Lethrinidae — 2
iNaturalist ((c) 李博恒, some rights reserved (CC BY-NC))
Chinese emperor (Lethrinus haematopterus) — Lethrinidae — 3
iNaturalist ((c) taiwan_habu, some rights reserved (CC BY-NC))
Chinese emperor (Lethrinus haematopterus) — Lethrinidae — 4
iNaturalist ((c) LEE Yeung, Gabriel, some rights reserved (CC BY-NC))
Chinese emperor (Lethrinus haematopterus) — Lethrinidae — 5
iNaturalist ((c) LEE Yeung, Gabriel, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Chinese emperor verified
Scientific name
Lethrinus haematopterus
Family
Lethrinidae
Other names
Chinese emperor; Common lenjan; Emperor fish verified

Appearance

Size class
Large verified
Max length (cm)
45.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Silver / grey inferred
Pattern
Plain inferred
Tail shape
Forked inferred
Mouth position
Terminal inferred
Lips
Thick / fleshy inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Natural range
Northwest Pacific; coastal waters. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Hard-shelled prey: molluscs, crustaceans and sea urchins, plus small fishes sourced
Social behaviour
Small groups inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Can change colour rapidly; crushes hard-shelled prey with strong jaws. sourced

For anglers

Edibility
Commonly eaten sourced
Fishing method
Fishing with natural bait (fish, shrimp, worm) or lures close to reef and rock structures. 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 Lethrinus

More from the family Lethrinidae

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