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Moon wrasse (Thalassoma hardwicke) — Labridae

Moon wrasse

Thalassoma hardwicke
Family: Labridae
LC · Least Concern

The Moon wrasse (Thalassoma hardwicke) is a saltwater fish of the family Labridae that grows up to 20 cm.

Length
20 cm
Water
Saltwater
Depth
0.0–15.0 m
Diet
Carnivore
Behaviour
Small groups
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Stone or rock
Danger
Harmless
Range
Indo-Pacific; shallow lagoon and seaward coral reefs.
Edibility
Rarely eaten

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Description

The sixbar wrasse is a colourful wrasse of the family Labridae from the Indo-Pacific. The species grows to about 20 cm and has a greenish body with six black, upward-narrowing crossbars and a pink-spotted head. It lives on shallow lagoon and seaward reefs, slopes and along drop-offs to moderate depths, usually in small, loose groups. As a predator it feeds on small crustaceans, molluscs and small fishes. Like many wrasses it changes sex during life, from female to male, with large males more brightly coloured. The species is harmless to humans.

Frequently asked questions

How do you recognise the Moon wrasse?

The Moon wrasse has a torpedo-shaped body, is mainly green and shows a vertical stripes pattern. Six black vertical bars and a pink spotted head; changes sex during its life.

Where does the Moon wrasse live?

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

How big does the Moon wrasse get?

The Moon wrasse grows to a maximum of about 20 cm. On average the species is around 15 cm.

Is the Moon wrasse dangerous to humans?

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

Is the Moon wrasse edible?

The Moon wrasse is rarely eaten.

More photos

Moon wrasse (Thalassoma hardwicke) — Labridae — 2
rusfam (CC BY-NC 4.0) via GBIF — iNaturalist
Moon wrasse (Thalassoma hardwicke) — Labridae — 3
iNaturalist ((c) warren cameron, some rights reserved (CC BY-NC))
Moon wrasse (Thalassoma hardwicke) — Labridae — 4
Wikimedia Commons — Paul Asman and Jill Lenoble (CC BY 2.0)
Moon wrasse (Thalassoma hardwicke) — Labridae — 5
iNaturalist ((c) Roxanne Lazarus, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Moon wrasse verified
Scientific name
Thalassoma hardwicke
Family
Labridae
Other names
Parrotfish; Six-banded wrasse; Sixbar wrasse; Six-barred wrasse; Sixbarred wrasse; Wrasse verified

Appearance

Size class
Medium verified
Max length (cm)
20 sourced
Average length (cm)
15.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Green inferred
Pattern
Vertical bars inferred
Tail shape
Straight 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
Min depth (m)
0.0 verified
Max depth (m)
15.0 verified
Natural range
Indo-Pacific; shallow lagoon and seaward coral reefs. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Small crustaceans, molluscs and small fishes sourced
Social behaviour
Small groups inferred
Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Protogynous (female first) sourced
Sexual dimorphism
Yes inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Six black vertical bars and a pink spotted head; changes sex during its life. sourced

For anglers

Edibility
Rarely 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 Thalassoma

More from the family Labridae

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