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Blue eye (Aplocheilus panchax) — Aplocheilidae

Blue eye

Aplocheilus panchax
Family: Aplocheilidae
LC · Least Concern
NativeIntroduced

The Blue eye (Aplocheilus panchax) is a brackish-water fish of the family Aplocheilidae that grows up to 9 cm.

Length
9 cm
Water
Brackish
Diet
Carnivore
Behaviour
Small groups
Body shape
Torpedo-shaped
Substrate
Mixed bottom
Danger
Harmless
Range
South and Southeast Asia; lowland wetlands, estuaries, rice fields and ditches.
Edibility
Not eaten

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Description

The blue panchax is a small killifish of the family Aplocheilidae from South and Southeast Asia. The species grows to about 9 cm and has an elongate body with a flattened back, an upturned mouth and a conspicuous shining, blue-white spot on top of the head. It inhabits lowland wetlands, estuaries, rice fields, ditches and peat waters and tolerates brackish water. As a surface hunter it watches just below the water surface for insects, larvae and small zooplankton; it also eats mosquito larvae, making it useful in mosquito control. The species is a popular, hardy aquarium fish and is harmless to humans.

Frequently asked questions

How do you recognise the Blue eye?

The Blue eye has a torpedo-shaped body, is mainly silver-grey and shows a plain pattern. Glossy blue-white head blotch; surface hunter that eats mosquito larvae and so helps with mosquito control.

Where does the Blue eye live?

The Blue eye lives in brackish water and is mostly found around mixed bottom. South and Southeast Asia; lowland wetlands, estuaries, rice fields and ditches.

How big does the Blue eye get?

The Blue eye grows to a maximum of about 9 cm. On average the species is around 5 cm.

Is the Blue eye dangerous to humans?

No, the Blue eye is harmless to humans. None required: this species is harmless to humans.

Is the Blue eye edible?

The Blue eye is not usually eaten.

More photos

Blue eye (Aplocheilus panchax) — Aplocheilidae — 2
Amon Engler (CC BY-NC 4.0) via GBIF — iNaturalist
Blue eye (Aplocheilus panchax) — Aplocheilidae — 3
iNaturalist ((c) Jyotiraditya Priyadarshi, some rights reserved (CC BY-NC))
Blue eye (Aplocheilus panchax) — Aplocheilidae — 4
Wikimedia Commons — Vengolis (CC BY-SA 3.0)
Blue eye (Aplocheilus panchax) — Aplocheilidae — 5
Wikimedia Commons — Vengolis (CC BY-SA 3.0)
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All data

Identification

English name
Blue eye verified
Scientific name
Aplocheilus panchax
Family
Aplocheilidae
Other names
Blue panchax; Estuarine ricefish; Java medaka; Killie; Lead-head; Panchax minnow; Silver-head; Spotted medaka; Spotted ricefish; White spot verified

Appearance

Size class
Small verified
Max length (cm)
9.0 verified
Average length (cm)
5.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Silver / grey inferred
Pattern
Plain inferred
Tail shape
Rounded 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
Brackish sourced
Substrate
Mixed bottom sourced
Natural range
South and Southeast Asia; lowland wetlands, estuaries, rice fields and ditches. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Insects, larvae (including midge larvae) and small zooplankton sourced
Social behaviour
Small groups inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
Yes inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Glossy blue-white head blotch; surface hunter that eats mosquito larvae and so helps with mosquito control. sourced

For anglers

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

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 Aplocheilus

More from the family Aplocheilidae

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