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Blackedge thicklip wrasse (Hemigymnus melapterus) — Labridae

Blackedge thicklip wrasse

Hemigymnus melapterus
Family: Labridae
LC · Least Concern

The Blackedge thicklip wrasse (Hemigymnus melapterus) is a saltwater fish of the family Labridae that grows up to 40 cm.

Length
39.6 cm
Water
Saltwater
Depth
0.0–30.0 m
Diet
Carnivore
Behaviour
Solitary
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Stone or rock
Danger
Harmless
Range
Indo-Pacific; subtidal reef flats and lagoon and seaward reefs.
Edibility
Rarely eaten

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Description

The blackeye thicklip is a robust wrasse of the family Labridae from the Indo-Pacific. The species grows to about 40 cm and has conspicuously thick lips and a two-coloured body: the front half pale and the rear half dark, with a yellow tail in juveniles. It inhabits subtidal reef flats and lagoon and seaward reefs; juveniles live inshore. With its thick lips and powerful jaws it takes mouthfuls of sand from which it sifts small invertebrates such as crustaceans, molluscs and worms. Like many wrasses it changes sex during life, from female to male. The species is harmless to humans.

Frequently asked questions

How do you recognise the Blackedge thicklip wrasse?

The Blackedge thicklip wrasse has a torpedo-shaped body, is mainly brown and shows a plain pattern. Thick lips and a two-coloured body (pale in front, dark behind); sifts sand for invertebrates.

Where does the Blackedge thicklip wrasse live?

The Blackedge thicklip wrasse lives in the sea (marine waters) and is mostly found around stony or rocky ground. Indo-Pacific; subtidal reef flats and lagoon and seaward reefs.

How big does the Blackedge thicklip wrasse get?

The Blackedge thicklip wrasse grows to a maximum of about 40 cm.

Is the Blackedge thicklip wrasse dangerous to humans?

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

Is the Blackedge thicklip wrasse edible?

The Blackedge thicklip wrasse is rarely eaten.

More photos

Blackedge thicklip wrasse (Hemigymnus melapterus) — Labridae — 2
iNaturalist ((c) donnymidas, some rights reserved (CC BY-NC))
Blackedge thicklip wrasse (Hemigymnus melapterus) — Labridae — 3
Wikimedia Commons — Rainer Kretzberg (CC BY 3.0)
Blackedge thicklip wrasse (Hemigymnus melapterus) — Labridae — 4
Wikimedia Commons — April Cordova & Ricky Tyquiengco (CC BY 3.0)
Blackedge thicklip wrasse (Hemigymnus melapterus) — Labridae — 5
iNaturalist ((c) Simon Nicholas, some rights reserved (CC BY-NC))
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All data

Identification

English name
Blackedge thicklip wrasse verified
Scientific name
Hemigymnus melapterus
Family
Labridae
Other names
Blackedge thicklip wrasse; Blackeye thicklip; Half-and-half wrasse; Thicklip wrasse; Blackeye thicklip wrasse; Half and half wrasse; Half-and-half thicklip; Half-half thicklip; Rainbow fish; Thick-lipped wrasse; Wrasse verified

Appearance

Size class
Medium verified
Max length (cm)
39.6 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Brown inferred
Pattern
Plain 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)
30.0 verified
Natural range
Indo-Pacific; subtidal reef flats and lagoon and seaward reefs. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Small invertebrates such as crustaceans, molluscs and worms sourced
Social behaviour
Solitary 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
Thick lips and a two-coloured body (pale in front, dark behind); sifts sand for invertebrates. 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 Hemigymnus

More from the family Labridae

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