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Broad shad (Diapterus auratus) — Gerreidae

Broad shad

Diapterus auratus
Family: Gerreidae
LC · Least Concern

The Broad shad (Diapterus auratus) is a brackish-water fish of the family Gerreidae that grows up to 43 cm.

Length
42.8 cm
Water
Brackish
Diet
Carnivore
Behaviour
Small groups
Body shape
Torpedo-shaped
Substrate
Sand / mud bottom
Danger
Harmless
Range
Western Atlantic; mangrove creeks, lagoons and vegetated sandy bottoms.
Edibility
Commonly eaten

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Description

The Irish pompano is a mojarra (Gerreidae) from the western Atlantic Ocean. The species grows to about 35 cm and has a deep, silvery, laterally compressed body with a highly protrusible mouth that it can extend downward as a tube to sift food from the bottom. It inhabits shallow coastal waters, especially mangrove creeks and lagoons, but also vegetated sand bottoms in the sea. Juveniles are more widespread than adults. It feeds on bottom-dwelling invertebrates. The species is valued as a food fish and is harmless to humans.

Frequently asked questions

How do you recognise the Broad shad?

The Broad shad has a torpedo-shaped body, is mainly silver-grey and shows a plain pattern. Highly protrusible tube mouth for sifting the bottom; inhabits mangrove creeks and lagoons.

Where does the Broad shad live?

The Broad shad lives in brackish water and is mostly found around sand or mud bottom. Western Atlantic; mangrove creeks, lagoons and vegetated sandy bottoms.

How big does the Broad shad get?

The Broad shad grows to a maximum of about 43 cm. On average the species is around 20 cm.

Is the Broad shad dangerous to humans?

No, the Broad shad is harmless to humans. None required: this species is harmless to humans.

Is the Broad shad edible?

Yes, the Broad shad is commonly eaten.

More photos

Broad shad (Diapterus auratus) — Gerreidae — 2
iNaturalist ((c) IHUNTA, some rights reserved (CC BY-NC))
Broad shad (Diapterus auratus) — Gerreidae — 3
Wikimedia Commons — David Starr Jordan (Public domain)
Broad shad (Diapterus auratus) — Gerreidae — 4
michael_zambardino (CC BY-NC 4.0) via GBIF — iNaturalist
Broad shad (Diapterus auratus) — Gerreidae — 5
iNaturalist ((c) Eric Cantu, some rights reserved (CC BY-NC))
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All data

Identification

English name
Broad shad verified
Scientific name
Diapterus auratus
Family
Gerreidae
Other names
Irish mojarra; Irish pompano; Mojarra; Muttonfish; Silver perch verified

Appearance

Size class
Large verified
Max length (cm)
42.8 verified
Average length (cm)
20.0 verified
Body shape
Torpedo-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
Brackish sourced
Substrate
Sand / mud bottom sourced
Natural range
Western Atlantic; mangrove creeks, lagoons and vegetated sandy bottoms. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Invertebrates living on the bottom sourced
Social behaviour
Small groups inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Highly protrusible tube mouth for sifting the bottom; inhabits mangrove creeks and lagoons. sourced

For anglers

Edibility
Commonly eaten sourced
Fishing method
Bottom fishing with natural bait (worm, shrimp or fish) on or just above the seabed. 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 Diapterus

More from the family Gerreidae

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