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Sharphead sleeper (Eleotris oxycephala) — Eleotridae

Sharphead sleeper

Eleotris oxycephala
Family: Eleotridae
LC · Least Concern

The Sharphead sleeper (Eleotris oxycephala) is a fish that lives in both fresh and salt water of the family Eleotridae that grows up to 19 cm.

Length
19 cm
Water
Euryhaline
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless
Edibility
Rarely eaten

Description

The sharphead sleeper is a sleeper goby of the family Eleotridae from East Asia. The species grows to about 19 cm and has an elongate, dark mottled body with a flattened, pointed head and a large mouth. As a euryhaline species it inhabits the lower reaches of rivers, estuaries and mangroves and tolerates brackish water. As a nocturnal ambush bottom predator it lies motionless in wait and seizes small fishes, shrimps and insect larvae. Unlike true gobies, sleepers have separate pelvic fins without a sucker. The species is a local food fish and is harmless to humans.

Frequently asked questions

How do you recognise the Sharphead sleeper?

The Sharphead sleeper has an elongate, eel-like body, is mainly brown and shows a marbled pattern.

Where does the Sharphead sleeper live?

The Sharphead sleeper lives in both fresh and salt water and is mostly found around sand or mud bottom.

How big does the Sharphead sleeper get?

The Sharphead sleeper grows to a maximum of about 19 cm. On average the species is around 10 cm.

Is the Sharphead sleeper dangerous to humans?

No, the Sharphead sleeper is harmless to humans.

Is the Sharphead sleeper edible?

The Sharphead sleeper is rarely eaten.

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All data

Identification

Dutch name
Spitskop-slaapgrondel sourced
English name
Sharphead sleeper sourced
Scientific name
Eleotris oxycephala
Family
Eleotridae

Appearance

Size class
Medium verified
Max length (cm)
19.0 verified
Average length (cm)
10.2 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown inferred
Pattern
Marbled inferred
Tail shape
Rounded inferred
Mouth position
Terminal inferred
Lips
Thick / fleshy inferred
Barbels
No sourced
Dorsal fins
Two separate inferred
Dorsal spines
Yes sourced

Habitat & distribution

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

Behaviour & biology

Diet
Carnivore sourced
Social behaviour
Solitary inferred
Territorial
No inferred
Activity
Nocturnal 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

Same genus Eleotris

More from the family Eleotridae

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