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Common ponyfish (Leiognathus equulus) — Leiognathidae

Common ponyfish

Leiognathus equulus
Family: Leiognathidae

The Common ponyfish (Leiognathus equulus) is a fish that lives in both fresh and salt water of the family Leiognathidae that grows up to 28 cm.

Length
28 cm
Water
Euryhaline
Diet
Carnivore
Behaviour
Schooling
Activity
Diurnal
Body shape
Flat / disc-shaped
Substrate
Sand / mud bottom
Danger
Harmless
Range
Indian and western Pacific Ocean, from East Africa to Oceania.
Edibility
Commonly eaten

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Description

The common ponyfish is a silvery coastal fish of the ponyfish family (Leiognathidae) of the Indian and western Pacific Oceans. The species grows to about 28 cm and has a deep, strongly compressed body with a strikingly protrusible, tubular mouth with which it sucks up small bottom animals. It lives over soft bottoms in coastal waters and estuaries and sometimes enters fresh water. Around its oesophagus it has a light organ containing luminous bacteria. It forms schools and is fished commercially. It is harmless to humans.

Frequently asked questions

How do you recognise the Common ponyfish?

The Common ponyfish has a flattened, disc-shaped body, is mainly silver-grey and shows a plain pattern. Highly protrusible tube mouth and a light organ with luminous bacteria.

Where does the Common ponyfish live?

The Common ponyfish lives in both fresh and salt water and is mostly found around sand or mud bottom. Indian and western Pacific Ocean, from East Africa to Oceania.

How big does the Common ponyfish get?

The Common ponyfish grows to a maximum of about 28 cm.

Is the Common ponyfish dangerous to humans?

No, the Common ponyfish is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.

Is the Common ponyfish edible?

Yes, the Common ponyfish is commonly eaten.

More photos

Common ponyfish (Leiognathus equulus) — Leiognathidae — 2
iNaturalist ((c) Jiri Hodecek, some rights reserved (CC BY-NC))
Common ponyfish (Leiognathus equulus) — Leiognathidae — 3
iNaturalist ((c) thomaslee93, some rights reserved (CC BY-NC))
Common ponyfish (Leiognathus equulus) — Leiognathidae — 4
iNaturalist ((c) Matthew Burnett, some rights reserved (CC BY-NC))
Common ponyfish (Leiognathus equulus) — Leiognathidae — 5
Oscar (CC BY-NC 4.0) via GBIF — iNaturalist
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All data

Identification

English name
Common ponyfish sourced
Scientific name
Leiognathus equulus
Family
Leiognathidae
Other names
Common slipmouth; Greater ponyfish; Ponyfish; Slimy; Slipmouth; Greater pony fish; Narrowbanded ponyfish; Narrow-banded ponyfish; Orange fin pony fish; Pony fish; Shortnose pony; Slimy soapy

Appearance

Size class
Medium
Max length (cm)
28.0 sourced
Body shape
Flat / disc-shaped sourced
Dominant colour
Silver / grey inferred
Pattern
Plain inferred
Tail shape
Forked inferred
Mouth position
Inferior (downward) inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Euryhaline sourced
Substrate
Sand / mud bottom sourced
Natural range
Indian and western Pacific Ocean, from East Africa to Oceania. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Small benthic invertebrates in soft sediment sourced
Social behaviour
Schooling inferred
Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Spawns in coastal waters with pelagic eggs in the warm months. inferred
Special features
Highly protrusible tube mouth and a light organ with luminous bacteria. sourced

For anglers

Edibility
Commonly eaten sourced
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced
First aid
This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status. verified

Status & sources

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

Same genus Leiognathus

More from the family Leiognathidae

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