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Bluehead wrasse (Thalassoma amblycephalum) — Labridae

Bluehead wrasse

Thalassoma amblycephalum
Family: Labridae
LC · Least Concern

The Bluehead wrasse (Thalassoma amblycephalum) is a saltwater fish of the family Labridae that grows up to 16 cm.

Length
16 cm
Water
Saltwater
Depth
0–15 m
Diet
Carnivore
Behaviour
Large groups
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Stone or rock
Danger
Harmless
Range
Indo-West Pacific; shallow lagoon and seaward reefs.
Edibility
Rarely eaten

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Description

The bluntheaded wrasse is a wrasse (Labridae) from the Indo-West Pacific. The species has a slender body; adult males are handsomely coloured with a green head and a yellow-and-blue band, females and juveniles are duller with a dark lengthwise stripe. It occurs in schools over shallow lagoon and seaward reefs and on reef flats. It plucks zooplankton from the water column and picks small invertebrates from the reef. The species is harmless to humans.

Frequently asked questions

How do you recognise the Bluehead wrasse?

The Bluehead wrasse has a torpedo-shaped body, is mainly green and shows a plain pattern. Male with a green head and a yellow-and-blue band; schooling plankton-eating wrasse.

Where does the Bluehead wrasse live?

The Bluehead wrasse lives in the sea (marine waters) and is mostly found around stony or rocky ground. Indo-West Pacific; shallow lagoon and seaward reefs.

How big does the Bluehead wrasse get?

The Bluehead wrasse grows to a maximum of about 16 cm.

Is the Bluehead wrasse dangerous to humans?

No, the Bluehead wrasse is harmless to humans. None required: this species is harmless to humans.

Is the Bluehead wrasse edible?

The Bluehead wrasse is rarely eaten.

More photos

Bluehead wrasse (Thalassoma amblycephalum) — Labridae — 2
Wikimedia Commons — Izuzuki (CC BY-SA 3.0)
Bluehead wrasse (Thalassoma amblycephalum) — Labridae — 3
Wikimedia Commons — Diego Delso (CC BY-SA 4.0)
Bluehead wrasse (Thalassoma amblycephalum) — Labridae — 4
Wikimedia Commons — Izuzuki (CC BY-SA 3.0)
Bluehead wrasse (Thalassoma amblycephalum) — Labridae — 5
iNaturalist ((c) Francois Libert, some rights reserved (CC BY-NC))

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All data

Identification

English name
Bluehead wrasse verified
Scientific name
Thalassoma amblycephalum
Family
Labridae
Other names
Bluehead wrasse; Bluntheaded wrasse; Twotone wrasse; Two-tone wrasse; Moon wrasse; Paddle-fin wrasse; Parrot fish; Parrotfish; Rainbow wrasse; Wrasse verified

Appearance

Size class
Medium verified
Max length (cm)
16 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Green
Pattern
Plain
Tail shape
Crescent (lunate)
Mouth position
Terminal
Lips
Thick / fleshy
Barbels
No sourced
Dorsal fins
One continuous
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Min depth (m)
0 verified
Max depth (m)
15 verified
Natural range
Indo-West Pacific; shallow lagoon and seaward reefs.
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Zooplankton and small invertebrates from the reef sourced
Social behaviour
Large groups
Territorial
No
Activity
Diurnal
Reproduction
Protogynous (female first) sourced
Sexual dimorphism
Yes
Seasonality
Present year-round in its habitat; no pronounced seasonality known.
Special features
Male with a green head and a yellow-and-blue band; schooling plankton-eating wrasse. sourced

For anglers

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

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 Thalassoma

More from the family Labridae

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