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Threespot grouper (Epinephelus trimaculatus) — Serranidae

Threespot grouper

Epinephelus trimaculatus
Family: Serranidae

The Threespot grouper (Epinephelus trimaculatus) is a saltwater fish of the family Serranidae that grows up to 50 cm.

Length
50 cm
Water
Saltwater
Depth
0.0–30.0 m
Diet
Carnivore
Body shape
Torpedo-shaped
Substrate
Stone or rock
Danger
Harmless
Range
Asia: China, Taiwan/Ch Taipei, Hong Kong, Japan, Korea (North), Korea (South) and others
Edibility
Commonly eaten

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Description

The Threespot grouper is a grouper (Epinephelidae) from reef water of the northwest Pacific, off East Asia. The species grows to about 40 cm and has a robust, brown with three dark saddle marks along the back body with a large mouth. As a bottom-oriented ambush hunter it shelters among rocks and coral and engulfs fish and crustaceans with a sudden suction strike. Like many groupers a female changes sex on loss of the male. The fish is harmless to humans.

Frequently asked questions

How do you recognise the Threespot grouper?

The Threespot grouper has a torpedo-shaped body and is mainly brown.

Where does the Threespot grouper live?

The Threespot grouper lives in the sea (marine waters) and is mostly found around stony or rocky ground. Asia: China, Taiwan/Ch Taipei, Hong Kong, Japan, Korea (North), Korea (South) and others

How big does the Threespot grouper get?

The Threespot grouper grows to a maximum of about 50 cm.

Is the Threespot grouper dangerous to humans?

No, the Threespot grouper is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.

Is the Threespot grouper edible?

Yes, the Threespot grouper is commonly eaten.

More photos

Threespot grouper (Epinephelus trimaculatus) — Serranidae — 2
P.C. Heemstra (CC BY 4.0) via GBIF — SAIAB
Threespot grouper (Epinephelus trimaculatus) — Serranidae — 3
Randall, John E. (CC0 1.0) via GBIF — USNM
Threespot grouper (Epinephelus trimaculatus) — Serranidae — 4
iNaturalist ((c) Tse Chung Yi, some rights reserved (CC BY-NC))
Threespot grouper (Epinephelus trimaculatus) — Serranidae — 5
iNaturalist ((c) ayegege, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Threespot grouper sourced
Scientific name
Epinephelus trimaculatus
Family
Serranidae
Other names
Threespot grouper; Black-saddled grouper verified

Appearance

Size class
Large verified
Max length (cm)
50.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Brown sourced
Tail shape
Rounded inferred

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Min depth (m)
0.0 verified
Max depth (m)
30.0 verified
Natural range
Asia: China, Taiwan/Ch Taipei, Hong Kong, Japan, Korea (North), Korea (South) and others sourced
Origin
Native inferred

Behaviour & biology

Diet
Carnivore inferred
Diet (detail)
Small fishes, crustaceans and invertebrates inferred
Territorial
No inferred
Reproduction
Protogynous (female first) sourced
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred

For anglers

Edibility
Commonly eaten inferred
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 verified
First aid
This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status. verified

Status & sources

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

Same genus Epinephelus

More from the family Serranidae

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