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Naked-headed goby (Favonigobius gymnauchen) — Gobiidae

Naked-headed goby

Favonigobius gymnauchen
Family: Gobiidae
LC · Least Concern

The Naked-headed goby (Favonigobius gymnauchen) is a fish that lives in both fresh and salt water of the family Gobiidae that grows up to 13 cm.

Length
13.4 cm
Water
Euryhaline
Diet
Carnivore
Behaviour
Small groups
Activity
Diurnal
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless
Range
Northwest Pacific (Japan, Korea and China), on sandy bottoms of shallow coastal water and estuaries; tolerates brackish water.
Edibility
Not eaten

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Description

The naked-headed goby is a small, semi-transparent goby of the family Gobiidae reaching about 13 cm. The sand-coloured body bears rows of dark spots; as in many gobies the pelvic fins are fused into a sucker and the camouflage makes the fish nearly invisible on sand. The species lives on sandy bottoms of shallow coastal water and estuaries in the northwest Pacific and tolerates brackish water. On the bottom it hunts small crustaceans, worms and midge larvae. In reproduction the male guards the eggs in a burrow under a shell or stone. Because of its small size and hidden lifestyle it draws little notice, but it is a link in the food web of the coastal zone.

Frequently asked questions

How do you recognise the Naked-headed goby?

The Naked-headed goby has an elongate, eel-like body, is mainly silver-grey and shows a spots pattern. Small, translucent sand goby with rows of dark blotches; fused pelvic fins form a sucker and the camouflage colouring hides it on sand.

Where does the Naked-headed goby live?

The Naked-headed goby lives in both fresh and salt water and is mostly found around sand or mud bottom. Northwest Pacific (Japan, Korea and China), on sandy bottoms of shallow coastal water and estuaries; tolerates brackish water.

How big does the Naked-headed goby get?

The Naked-headed goby grows to a maximum of about 13 cm.

Is the Naked-headed goby dangerous to humans?

No, the Naked-headed goby is harmless to humans. None required: this species is harmless to humans.

Is the Naked-headed goby edible?

The Naked-headed goby is not usually eaten.

More photos

Naked-headed goby (Favonigobius gymnauchen) — Gobiidae — 2
iNaturalist ((c) Fishopedia, some rights reserved (CC BY-NC))
Naked-headed goby (Favonigobius gymnauchen) — Gobiidae — 3
iNaturalist ((c) Woochan Seo, some rights reserved (CC BY-NC-SA))
Naked-headed goby (Favonigobius gymnauchen) — Gobiidae — 4
Wikimedia Commons — Izuzuki (CC BY-SA 3.0)
Naked-headed goby (Favonigobius gymnauchen) — Gobiidae — 5
Wikimedia Commons — Totti (CC BY-SA 4.0)
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All data

Identification

English name
Naked-headed goby verified
Scientific name
Favonigobius gymnauchen
Family
Gobiidae
Other names
Sharp-nosed sand goby sourced

Appearance

Size class
Small verified
Max length (cm)
13.4 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Silver / grey sourced
Pattern
Spots sourced
Tail shape
Rounded inferred
Mouth position
Terminal inferred
Lips
Thick / fleshy inferred
Barbels
No verified
Dorsal fins
Two separate sourced
Dorsal spines
Yes verified

Habitat & distribution

Water type
Euryhaline verified
Substrate
Sand / mud bottom verified
Natural range
Northwest Pacific (Japan, Korea and China), on sandy bottoms of shallow coastal water and estuaries; tolerates brackish water. verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore verified
Diet (detail)
Small crustaceans, worms and midge larvae from the bottom sourced
Social behaviour
Small groups verified
Territorial
Yes verified
Activity
Diurnal inferred
Reproduction
Separate sexes verified
Sexual dimorphism
No verified
Seasonality
Spawns in the warm season; the male guards the eggs in a small hollow under a shell or stone. sourced
Special features
Small, translucent sand goby with rows of dark blotches; fused pelvic fins form a sucker and the camouflage colouring hides it on sand. sourced

For anglers

Edibility
Not eaten verified
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 verified
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 Favonigobius

More from the family Gobiidae

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