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Lizard goby (Rhinogobius flumineus) — Gobiidae

Lizard goby

Rhinogobius flumineus
Family: Gobiidae

The Lizard goby (Rhinogobius flumineus) is a freshwater fish of the family Gobiidae that grows up to 7 cm.

Length
7 cm
Water
Freshwater
Diet
Carnivore
Behaviour
Solitary
Body shape
Torpedo-shaped
Substrate
Mixed bottom
Danger
Harmless
Range
Endemic to Japan; middle and upper reaches of rivers with flowing water.
Edibility
Not eaten

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Description

The lizard goby is a small freshwater goby of the family Gobiidae, endemic to Japan. The species grows to about 7 cm and has a stocky, brownish body with a fine pattern. Adults inhabit the middle and upper reaches of rivers and stay mainly in open, shallow areas with flowing water over gravel and stones. With their fused pelvic fins, which form a sucker, they cling to the bottom against the current. As a small bottom hunter it feeds on insect larvae and other small invertebrates. The male guards the eggs laid on the underside of stones. The species is harmless to humans.

Frequently asked questions

How do you recognise the Lizard goby?

The Lizard goby has a torpedo-shaped body, is mainly brown and shows a marbled pattern. Fused pelvic fins acting as a sucker to attach to stones against the current.

Where does the Lizard goby live?

The Lizard goby lives in fresh water and is mostly found around mixed bottom. Endemic to Japan; middle and upper reaches of rivers with flowing water.

How big does the Lizard goby get?

The Lizard goby grows to a maximum of about 7 cm.

Is the Lizard goby dangerous to humans?

No, the Lizard goby is harmless to humans. None required: this species is harmless to humans.

Is the Lizard goby edible?

The Lizard goby is not usually eaten.

More photos

Lizard goby (Rhinogobius flumineus) — Gobiidae — 2
iNaturalist ((c) Vince Golder, some rights reserved (CC BY-NC))
Lizard goby (Rhinogobius flumineus) — Gobiidae — 3
iNaturalist ((c) r-fujii, some rights reserved (CC BY-NC))
Lizard goby (Rhinogobius flumineus) — Gobiidae — 4
Wikimedia Commons — Joseph Aubert (CC BY 4.0)
Lizard goby (Rhinogobius flumineus) — Gobiidae — 5
りなべる (CC BY 4.0) via GBIF — iNaturalist

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All data

Identification

English name
Lizard goby sourced
Scientific name
Rhinogobius flumineus
Family
Gobiidae

Appearance

Size class
Small verified
Max length (cm)
7 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Brown
Pattern
Marbled
Tail shape
Rounded
Mouth position
Terminal
Lips
Thin
Barbels
No sourced
Dorsal fins
Two separate
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Mixed bottom sourced
Natural range
Endemic to Japan; middle and upper reaches of rivers with flowing water.
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Insect larvae and small invertebrates sourced
Social behaviour
Solitary
Territorial
No
Reproduction
Separate sexes sourced
Sexual dimorphism
No
Seasonality
Present year-round in its habitat; no pronounced seasonality known.
Special features
Fused pelvic fins acting as a sucker to attach to stones against the current. sourced

For anglers

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

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 Rhinogobius

More from the family Gobiidae

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