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Cocos frillgoby (Bathygobius cocosensis) — Gobiidae

Cocos frillgoby

Bathygobius cocosensis
Family: Gobiidae
LC · Least Concern

The Cocos frillgoby (Bathygobius cocosensis) is a brackish-water fish of the family Gobiidae that grows up to 12 cm.

Length
12 cm
Water
Brackish
Depth
0.0–10.0 m
Diet
Omnivore
Behaviour
Solitary
Activity
Diurnal
Body shape
Elongated (eel-like)
Substrate
Stone or rock
Danger
Harmless
Range
Indo-Pacific
Edibility
Not eaten

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Description

The Cocos frillgoby is a small goby from the Indo-Pacific. The species grows to about 12 cm and has an elongate, brown marbled body that blends in well on rock and coral rubble, and frilled upper pectoral-fin rays. As a bottom-dweller it lives in shallow coastal and intertidal water, often in tidal pools, and feeds on small crustaceans, worms and algae. The fish is harmless to humans and has no commercial value. The IUCN assesses the species as Least Concern (LC).

Frequently asked questions

How do you recognise the Cocos frillgoby?

The Cocos frillgoby has an elongate, eel-like body, is mainly brown and shows a marbled pattern. Marbled camouflage and fringed pectoral fin rays; intertidal goby

Where does the Cocos frillgoby live?

The Cocos frillgoby lives in brackish water and is mostly found around stony or rocky ground. Indo-Pacific

How big does the Cocos frillgoby get?

The Cocos frillgoby grows to a maximum of about 12 cm.

Is the Cocos frillgoby dangerous to humans?

No, the Cocos frillgoby 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 Cocos frillgoby edible?

The Cocos frillgoby is not usually eaten.

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All data

Identification

English name
Cocos frillgoby verified
Scientific name
Bathygobius cocosensis
Family
Gobiidae
Other names
Cocos frillgoby; Cocos frill-goby; Cocos goby; Common goby; Tidepool goby verified

Appearance

Size class
Small verified
Max length (cm)
12.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown sourced
Pattern
Marbled sourced
Tail shape
Rounded inferred
Mouth position
Terminal sourced
Lips
Thin sourced
Barbels
No sourced
Dorsal fins
Two separate sourced
Dorsal spines
No sourced

Habitat & distribution

Water type
Brackish sourced
Substrate
Stone or rock sourced
Min depth (m)
0.0 verified
Max depth (m)
10.0 verified
Natural range
Indo-Pacific verified
Origin
Native verified

Behaviour & biology

Diet
Omnivore sourced
Diet (detail)
Small crustaceans, worms and algae inferred
Social behaviour
Solitary sourced
Territorial
No sourced
Activity
Diurnal sourced
Reproduction
Separate sexes sourced
Sexual dimorphism
No sourced
Seasonality
Intertidal-zone goby; present year-round. sourced
Special features
Marbled camouflage and fringed pectoral fin rays; intertidal goby sourced

For anglers

Edibility
Not eaten sourced
Fishing method
Not a target species for angling; at most an incidental catch or usable as baitfish. 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

Same genus Bathygobius

More from the family Gobiidae

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