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Greenback gauvina (Bunaka gyrinoides) — Eleotridae

Greenback gauvina

Bunaka gyrinoides
Family: Eleotridae
LC · Least Concern

The Greenback gauvina (Bunaka gyrinoides) is a fish that lives in both fresh and salt water of the family Eleotridae that grows up to 34 cm.

Length
34 cm
Water
Euryhaline
Depth
0.0–5.0 m
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Torpedo-shaped
Substrate
Sand / mud bottom
Danger
Harmless
Range
Indo-Pacific
Edibility
Rarely eaten

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Description

The greenback gauvina is a sleeper goby of the Indo-Pacific, ranging from Sri Lanka and Indonesia to the Philippines, New Guinea, Micronesia and Australia. It grows to about 34 cm, but is usually around 15 cm. It has a stocky body with two separate dorsal fins and a large mouth, and is greenish on the back. The fish lives in fresh, brackish and estuarine water, often in forested creeks on mud bottoms and under undercut banks, and is amphidromous: the larvae develop at sea. As a predator it hunts smaller fish and crustaceans. The IUCN assesses the species as Least Concern (LC).

Frequently asked questions

How do you recognise the Greenback gauvina?

The Greenback gauvina has a torpedo-shaped body, is mainly green and shows a plain pattern. Large mouth and greenish back; amphidromous with a marine larval phase

Where does the Greenback gauvina live?

The Greenback gauvina lives in both fresh and salt water and is mostly found around sand or mud bottom. Indo-Pacific

How big does the Greenback gauvina get?

The Greenback gauvina grows to a maximum of about 34 cm. On average the species is around 15 cm.

Is the Greenback gauvina dangerous to humans?

No, the Greenback gauvina 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 Greenback gauvina edible?

The Greenback gauvina is rarely eaten.

More photos

Greenback gauvina (Bunaka gyrinoides) — Eleotridae — 2
iNaturalist ((c) Vince Golder, some rights reserved (CC BY-NC))
Greenback gauvina (Bunaka gyrinoides) — Eleotridae — 3
iNaturalist ((c) an2mc, some rights reserved (CC BY-NC))
Greenback gauvina (Bunaka gyrinoides) — Eleotridae — 4
iNaturalist ((c) Ariel, some rights reserved (CC BY-NC))
Greenback gauvina (Bunaka gyrinoides) — Eleotridae — 5
iNaturalist ((c) Whispers of Aqua, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Greenback gauvina verified
Scientific name
Bunaka gyrinoides
Family
Eleotridae
Other names
Greenback gauvina; Greenback guavina; Green-backed gauvina; Green-backed guavina verified

Appearance

Size class
Medium verified
Max length (cm)
34.0 verified
Average length (cm)
15.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Green inferred
Pattern
Plain inferred
Tail shape
Rounded inferred
Mouth position
Terminal sourced
Lips
Thin sourced
Barbels
No sourced
Dorsal fins
Two separate sourced
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Euryhaline sourced
Substrate
Sand / mud bottom sourced
Min depth (m)
0.0 verified
Max depth (m)
5.0 verified
Natural range
Indo-Pacific verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Smaller fishes and crustaceans sourced
Social behaviour
Solitary inferred
Territorial
Yes inferred
Activity
Nocturnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No sourced
Seasonality
Amphidromous: larvae at sea, adults in fresh and brackish water. sourced
Special features
Large mouth and greenish back; amphidromous with a marine larval phase sourced

For anglers

Edibility
Rarely 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
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

More from the family Eleotridae

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