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Chinese muddy loach (Misgurnus mizolepis) — Cobitidae

Chinese muddy loach

Misgurnus mizolepis
Family: Cobitidae

The Chinese muddy loach (Misgurnus mizolepis) is a freshwater fish of the family Cobitidae that grows up to 20 cm.

Length
20 cm
Water
Freshwater
Diet
Omnivore
Behaviour
Small groups
Activity
Nocturnal
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless
Range
East Asia; muddy rice fields, ponds, ditches and slow-flowing waters.
Edibility
Commonly eaten

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Description

The Chinese weatherfish is a loach of the family Cobitidae from East Asia. The species grows to about 20 cm and has an elongate, eel-like, yellow-brown body with barbels around the mouth. It inhabits muddy bottoms of rice fields, ponds, ditches and slow-flowing waters. As a detritivore and bottom searcher it roots with its barbels for detritus, algae, worms and insect larvae. Loaches can breathe gut air and burrow deep into the mud to survive periods of drought or oxygen shortage; they also react to changes in air pressure, hence the name 'weatherfish'. The species is a local food fish and is harmless to humans.

Frequently asked questions

How do you recognise the Chinese muddy loach?

The Chinese muddy loach has an elongate, eel-like body, is mainly brown and shows a marbled pattern. Breathes air through the gut and burrows into the mud; responds to air pressure ('weather fish').

Where does the Chinese muddy loach live?

The Chinese muddy loach lives in fresh water and is mostly found around sand or mud bottom. East Asia; muddy rice fields, ponds, ditches and slow-flowing waters.

How big does the Chinese muddy loach get?

The Chinese muddy loach grows to a maximum of about 20 cm. On average the species is around 17 cm.

Is the Chinese muddy loach dangerous to humans?

No, the Chinese muddy loach is harmless to humans. None required: this species is harmless to humans.

Is the Chinese muddy loach edible?

Yes, the Chinese muddy loach is commonly eaten.

More photos

Chinese muddy loach (Misgurnus mizolepis) — Cobitidae — 2
iNaturalist ((c) r-fujii, some rights reserved (CC BY-NC))
Chinese muddy loach (Misgurnus mizolepis) — Cobitidae — 3
iNaturalist ((c) fz_urb, some rights reserved (CC BY-NC))
Chinese muddy loach (Misgurnus mizolepis) — Cobitidae — 4
iNaturalist ((c) MP Zhou, some rights reserved (CC BY-NC))
Chinese muddy loach (Misgurnus mizolepis) — Cobitidae — 5
iNaturalist ((c) xiaodou, some rights reserved (CC BY-NC))

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All data

Identification

English name
Chinese muddy loach verified
Scientific name
Misgurnus mizolepis
Family
Cobitidae
Other names
Pond loach verified

Appearance

Size class
Medium verified
Max length (cm)
20 verified
Average length (cm)
16.7 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown
Pattern
Marbled
Tail shape
Rounded
Mouth position
Inferior (downward)
Lips
Thick / fleshy
Barbels
Yes sourced
Dorsal fins
One continuous
Dorsal spines
No sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Sand / mud bottom sourced
Natural range
East Asia; muddy rice fields, ponds, ditches and slow-flowing waters.
Origin
Native sourced

Behaviour & biology

Diet
Omnivore sourced
Diet (detail)
Detritus, algae, worms and insect larvae sourced
Social behaviour
Small groups
Territorial
No
Activity
Nocturnal
Reproduction
Separate sexes sourced
Sexual dimorphism
No
Seasonality
Present year-round in its habitat; no pronounced seasonality known.
Special features
Breathes air through the gut and burrows into the mud; responds to air pressure ('weather fish'). sourced

For anglers

Edibility
Commonly eaten sourced
Fishing method
Bottom fishing with natural bait (worm, shrimp or fish) on or just above the seabed.
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 Misgurnus

More from the family Cobitidae

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