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Longfin bristlemouth (Sigmops longipinnis) — Gonostomatidae

Longfin bristlemouth

Sigmops longipinnis

The Longfin bristlemouth (Sigmops longipinnis) is a saltwater fish of the family Gonostomatidae that grows up to 7 cm.

Length
7 cm
Water
Saltwater
Depth
0–72 m
Diet
Carnivore
Behaviour
Schooling
Activity
Nocturnal
Body shape
Elongated (eel-like)
Substrate
Open water
Danger
Harmless
Edibility
Not eaten

Description

The longfin bristlemouth is a small mesopelagic lightfish (Gonostomatidae) of the open ocean. The species grows to about 7 cm and has a slender, dark, scaleless body with rows of light-producing organs (photophores) along the belly and a mouth full of fine, bristle-like teeth. Bristlemouths are among the most numerous vertebrates on Earth. As a vertical migrant it rises at night and eats small zooplankton. The fish is harmless to humans.

Frequently asked questions

How do you recognise the Longfin bristlemouth?

The Longfin bristlemouth has an elongate, eel-like body, is mainly black and shows a plain pattern.

Where does the Longfin bristlemouth live?

The Longfin bristlemouth lives in the sea (marine waters) and is mostly found around open water.

How big does the Longfin bristlemouth get?

The Longfin bristlemouth grows to a maximum of about 7 cm. On average the species is around 4 cm.

Is the Longfin bristlemouth dangerous to humans?

No, the Longfin bristlemouth is harmless to humans.

Is the Longfin bristlemouth edible?

The Longfin bristlemouth is not usually eaten.

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All data

Identification

Dutch name
Langvin-borstelmondvis sourced
English name
Longfin bristlemouth sourced
Scientific name
Sigmops longipinnis
Family
Gonostomatidae

Appearance

Size class
Small verified
Max length (cm)
7.0 verified
Average length (cm)
4.2 sourced
Body shape
Elongated (eel-like) sourced
Dominant colour
Black sourced
Pattern
Plain sourced
Tail shape
Forked inferred
Mouth position
Terminal sourced
Lips
Thin sourced
Barbels
No sourced
Dorsal fins
One continuous sourced
Dorsal spines
No sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Open water sourced
Min depth (m)
0 sourced
Max depth (m)
72 sourced
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Social behaviour
Schooling sourced
Territorial
No sourced
Activity
Nocturnal sourced
Reproduction
Separate sexes sourced
Sexual dimorphism
No sourced

For anglers

Edibility
Not eaten sourced
Fishing method
Geen doelsoort voor de hengelsport; hooguit incidentele vangst of bruikbaar als aasvisje. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified

Status & sources

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

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