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Japanese loach (Niwaella delicata) — Cobitidae

Japanese loach

Niwaella delicata
Family: Cobitidae
LC · Least Concern

The Japanese loach (Niwaella delicata) is a freshwater fish of the family Cobitidae that grows up to 10 cm.

Length
9.5 cm
Water
Freshwater
Diet
Omnivore
Behaviour
Small groups
Activity
Nocturnal
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless
Edibility
Not eaten

Description

The Japanese loach is a small loach endemic to Japan. The species grows to about 10 cm and has a slender, laterally compressed body with a row of dark blotches along the flank and barbels around the mouth. As a bottom-dweller it roots in sand and gravel of clear rivers and streams for small invertebrates and detritus. The fish is harmless to humans and is assessed as Least Concern (LC) by the IUCN.

Frequently asked questions

How do you recognise the Japanese loach?

The Japanese loach has an elongate, eel-like body, is mainly brown and shows a spots pattern.

Where does the Japanese loach live?

The Japanese loach lives in fresh water and is mostly found around sand or mud bottom.

How big does the Japanese loach get?

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

Is the Japanese loach dangerous to humans?

No, the Japanese loach is harmless to humans.

Is the Japanese loach edible?

The Japanese loach is not usually eaten.

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All data

Identification

Dutch name
Japanse riviermodderkruiper verified
English name
Japanese loach verified
Scientific name
Niwaella delicata
Family
Cobitidae

Appearance

Size class
Small verified
Max length (cm)
9.5 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown inferred
Pattern
Spots sourced
Tail shape
Rounded inferred
Mouth position
Inferior (downward) sourced
Lips
Thin sourced
Barbels
Yes sourced
Dorsal fins
One continuous sourced
Dorsal spines
No sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Sand / mud bottom sourced
Origin
Native verified

Behaviour & biology

Diet
Omnivore sourced
Social behaviour
Small groups sourced
Territorial
No sourced
Activity
Nocturnal sourced
Reproduction
Separate sexes sourced
Sexual dimorphism
No sourced

For anglers

Edibility
Not eaten sourced
Fishing method
Geen doelsoort voor de hengelsport; hooguit incidentele vangst of bruikbaar als aasvisje. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

More from the family Cobitidae

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