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Japanese silverbiddy (Gerres equulus) — Gerreidae

Japanese silverbiddy

Gerres equulus
Family: Gerreidae

The Japanese silverbiddy (Gerres equulus) is a saltwater fish of the family Gerreidae that grows up to 23 cm.

Length
23.2 cm
Water
Saltwater
Body shape
Torpedo-shaped
Substrate
Sand / mud bottom
Danger
Harmless
Range
Asia: Japan, Korea (South)

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Description

The Japanese silverbiddy is a mojarra (Gerreidae) from coastal waters of the northwest Pacific, off East Asia. The species grows to about 23 cm and has a deep, bright-silvery, laterally compressed body with a strongly protrusible, downward-pointing mouth. As a bottom-oriented fish it searches sand and mud bottoms of shallow coastal water and estuaries for small worms, crustaceans and molluscs. It is a food fish. The fish is harmless to humans.

Frequently asked questions

How do you recognise the Japanese silverbiddy?

The Japanese silverbiddy has a torpedo-shaped body and is mainly silver-grey.

Where does the Japanese silverbiddy live?

The Japanese silverbiddy lives in the sea (marine waters) and is mostly found around sand or mud bottom. Asia: Japan, Korea (South)

How big does the Japanese silverbiddy get?

The Japanese silverbiddy grows to a maximum of about 23 cm.

Is the Japanese silverbiddy dangerous to humans?

No, the Japanese silverbiddy 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.

More photos

Japanese silverbiddy (Gerres equulus) — Gerreidae — 2
iNaturalist ((c) taiwan_habu, some rights reserved (CC BY-NC))
Japanese silverbiddy (Gerres equulus) — Gerreidae — 3
iNaturalist ((c) Masunosuke, some rights reserved (CC BY-NC))
Japanese silverbiddy (Gerres equulus) — Gerreidae — 4
Wikimedia Commons — Izuzuki (CC BY-SA 3.0)
Japanese silverbiddy (Gerres equulus) — Gerreidae — 5
Wikimedia Commons — Totti (CC BY-SA 4.0)
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All data

Identification

English name
Japanese silverbiddy sourced
Scientific name
Gerres equulus
Family
Gerreidae
Other names
Japanese silver-biddy sourced

Appearance

Size class
Medium verified
Max length (cm)
23.2 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Silver / grey sourced
Tail shape
Forked inferred
Mouth position
Inferior (downward) sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Sand / mud bottom sourced
Natural range
Asia: Japan, Korea (South) sourced
Origin
Native inferred

Behaviour & biology

Territorial
No inferred
Reproduction
Separate sexes inferred
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred

For anglers

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 verified
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 Gerres

More from the family Gerreidae

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