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Wataka (Ischikauia steenackeri) — Cyprinidae

Wataka

Ischikauia steenackeri
Family: Cyprinidae
EN · Endangered

The Wataka (Ischikauia steenackeri) is a freshwater fish of the family Cyprinidae that grows up to 30 cm.

Length
30 cm
Water
Freshwater
Diet
Omnivore
Behaviour
Schooling
Activity
Diurnal
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless
Edibility
Rarely eaten

Description

Ischikauia steenackeri, known in Japan as wataka, is a slender cyprinid of the family Cyprinidae endemic to Japan, particularly Lake Biwa and adjacent waters. The species has an elongate, laterally compressed, silvery body with an upward-pointing mouth and reaches about 30 cm. It lives in schools in the open water column of lakes and slow-flowing rivers. As an omnivore it feeds on zooplankton, small invertebrates and plant matter. Owing to habitat loss, water pollution and introduced competitors the species has declined sharply and is assessed as Endangered (EN). It is eaten locally.

Frequently asked questions

How do you recognise the Wataka?

The Wataka has an elongate, eel-like body, is mainly silver-grey and shows a plain pattern.

Where does the Wataka live?

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

How big does the Wataka get?

The Wataka grows to a maximum of about 30 cm.

Is the Wataka dangerous to humans?

No, the Wataka is harmless to humans.

Is the Wataka edible?

The Wataka is rarely eaten.

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All data

Identification

Dutch name
Wataka sourced
English name
Wataka sourced
Scientific name
Ischikauia steenackeri
Family
Cyprinidae

Appearance

Size class
Medium verified
Max length (cm)
30.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Silver / grey inferred
Pattern
Plain inferred
Tail shape
Forked inferred
Mouth position
Superior (upward) inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
No sourced

Habitat & distribution

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

Behaviour & biology

Diet
Omnivore sourced
Social behaviour
Schooling inferred
Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred

For anglers

Edibility
Rarely eaten sourced
Fishing method
Bodemvissen met natuurlijk aas (worm, garnaal of vis) op of vlak boven de bodem. 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 Cyprinidae

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