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Glowfish (Gnathodentex aureolineatus) — Lethrinidae

Glowfish

Gnathodentex aureolineatus
Family: Lethrinidae
LC · Least Concern

The Glowfish (Gnathodentex aureolineatus) is a saltwater fish of the family Lethrinidae that grows up to 42 cm.

Length
42.3 cm
Water
Saltwater
Depth
0.0–30.0 m
Diet
Carnivore
Behaviour
Large groups
Activity
Nocturnal
Body shape
Torpedo-shaped
Substrate
Stone or rock
Danger
Venomous / poisonous
Range
Indo-Pacific; reef flats, lagoons and seaward reefs.
Edibility
Commonly eaten

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Description

The goldlined seabream is an emperor (Lethrinidae) from the Indo-Pacific. The species has an elongate, silvery body with golden-yellow and brown lengthwise lines, large eyes and a white blotch below the rear dorsal fin. By day it forms schools above reef flats, lagoons and seaward reefs; at night it disperses to hunt. As a bottom hunter it feeds on small crustaceans, molluscs, sea urchins and small fishes. It is a food fish. The species is harmless to humans.

Frequently asked questions

How do you recognise the Glowfish?

The Glowfish has a torpedo-shaped body, is mainly silver-grey and shows a horizontal stripes pattern. Golden-yellow longitudinal lines and a white blotch below the dorsal fin; schooling during the day, a nocturnal bottom hunter. Note: in tropical areas this species can cause ciguatera poisoning when eaten; large specimens of coral reef predators can accumulate the toxin. Eat with care or avoid in risk areas.

Where does the Glowfish live?

The Glowfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Indo-Pacific; reef flats, lagoons and seaward reefs.

How big does the Glowfish get?

The Glowfish grows to a maximum of about 42 cm. On average the species is around 20 cm.

Is the Glowfish dangerous to humans?

The Glowfish is venomous — handle spines with care and seek medical help after a sting if needed. None required: this species is harmless to humans.

Is the Glowfish edible?

Yes, the Glowfish is commonly eaten.

More photos

Glowfish (Gnathodentex aureolineatus) — Lethrinidae — 2
Aleksandr Gromov (CC BY 4.0) via GBIF — iNaturalist
Glowfish (Gnathodentex aureolineatus) — Lethrinidae — 3
iNaturalist ((c) National Coral Reef Monitoring Program - Pacific Region, some rights reserved (CC BY-NC))
Glowfish (Gnathodentex aureolineatus) — Lethrinidae — 4
Wikimedia Commons — Paul Asman and Jill Lenoble (CC BY 2.0)
Glowfish (Gnathodentex aureolineatus) — Lethrinidae — 5
iNaturalist ((c) National Coral Reef Monitoring Program - Pacific Region, some rights reserved (CC BY-NC))
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All data

Identification

English name
Glowfish verified
Scientific name
Gnathodentex aureolineatus
Family
Lethrinidae
Other names
Glowspot sea-bream; Gold striped bream; Golden-lined sea perch; Goldlined emperor; Gold-lined sea bream; Striped large-eye bream; Yellowspot emperor; Goldspot emperor; Gold-lined seabream; Gold-lined sea-bream; Gold-spot bream; Gold-spot emperor verified

Appearance

Size class
Large verified
Max length (cm)
42.3 verified
Average length (cm)
20.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Silver / grey inferred
Pattern
Horizontal stripes 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
Min depth (m)
0.0 verified
Max depth (m)
30.0 verified
Natural range
Indo-Pacific; reef flats, lagoons and seaward reefs. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Small crustaceans, molluscs, sea urchins and small fishes sourced
Social behaviour
Large groups inferred
Territorial
No inferred
Activity
Nocturnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Golden-yellow longitudinal lines and a white blotch below the dorsal fin; schooling during the day, a nocturnal bottom hunter. Note: in tropical areas this species can cause ciguatera poisoning when eaten; large specimens of coral reef predators can accumulate the toxin. Eat with care or avoid in risk areas. verified

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
Venomous / poisonous 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

More from the family Lethrinidae

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