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Flathead loach (Oreonectes platycephalus) — Nemacheilidae

Flathead loach

Oreonectes platycephalus
Family: Nemacheilidae

The Flathead loach (Oreonectes platycephalus) is a freshwater fish of the family Nemacheilidae that grows up to 10 cm.

Length
10 cm
Water
Freshwater
Diet
Carnivore
Activity
Nocturnal
Body shape
Elongated (eel-like)
Substrate
Stone or rock
Danger
Harmless
Range
Asia: China, Hong Kong, Viet Nam

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Description

The flathead loach is a stone loach (Nemacheilidae) from fast-flowing and underground fresh water of southern China. The species grows to about 6 cm and has a slender, elongate body with a flattened head, small barbels and a scale-poor skin; some populations live in caves and are then pale. As a bottom-dweller it lives among stones and gravel of clear streams and snaps at insect larvae and small invertebrates. The fish is harmless to humans.

Frequently asked questions

How do you recognise the Flathead loach?

The Flathead loach has an elongate, eel-like body and is mainly brown.

Where does the Flathead loach live?

The Flathead loach lives in fresh water and is mostly found around stony or rocky ground. Asia: China, Hong Kong, Viet Nam

How big does the Flathead loach get?

The Flathead loach grows to a maximum of about 10 cm.

Is the Flathead loach dangerous to humans?

No, the Flathead loach 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

Flathead loach (Oreonectes platycephalus) — Nemacheilidae — 2
韩承睿 (CC BY-NC 4.0) via GBIF — iNaturalist
Flathead loach (Oreonectes platycephalus) — Nemacheilidae — 3
iNaturalist ((c) szlly404, some rights reserved (CC BY-NC))
Flathead loach (Oreonectes platycephalus) — Nemacheilidae — 4
iNaturalist ((c) Tse Chung Yi, some rights reserved (CC BY-NC))
Flathead loach (Oreonectes platycephalus) — Nemacheilidae — 5
iNaturalist ((c) maxime_p3r3, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Flathead loach sourced
Scientific name
Oreonectes platycephalus
Family
Nemacheilidae
Other names
Flat-headed loach sourced

Appearance

Size class
Small verified
Max length (cm)
10.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown sourced
Tail shape
Straight inferred
Barbels
Yes sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Stone or rock sourced
Natural range
Asia: China, Hong Kong, Viet Nam sourced
Origin
Native inferred

Behaviour & biology

Diet
Carnivore inferred
Diet (detail)
Small fishes, crustaceans and invertebrates inferred
Territorial
No inferred
Activity
Nocturnal 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
Small in size and barely an angling target; mostly caught incidentally or as baitfish. 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 Oreonectes

More from the family Nemacheilidae

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