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Bluespotted stargazer (Xenocephalus elongatus) — Uranoscopidae

Bluespotted stargazer

Xenocephalus elongatus
Family: Uranoscopidae

The Bluespotted stargazer (Xenocephalus elongatus) is a saltwater fish of the family Uranoscopidae that grows up to 30 cm.

Length
30 cm
Water
Saltwater
Depth
35.0–440.0 m
Body shape
Elongated (eel-like)
Substrate
Open water
Danger
Venomous / poisonous
Range
Asia: China, Taiwan/Ch Taipei, Hong Kong, Indonesia, Japan, Korea (North) and others
Edibility
Commonly eaten

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Description

The bluespotted stargazer is a stargazer (Uranoscopidae) from coastal waters of the northwest Pacific, off East Asia. The species grows to about 30 cm and has a stocky body with a large, upturned head and mouth and blue spots. As an ambush hunter it lies buried in sand and mud bottoms, with only the eyes and mouth showing. Behind the gill cover it carries a venom-linked spine; a sting is painful. Handle with care.

Frequently asked questions

How do you recognise the Bluespotted stargazer?

The Bluespotted stargazer has an elongate, eel-like body, is mainly brown and shows a spots pattern. Bears venomous spines or tissue; handle with great care.

Where does the Bluespotted stargazer live?

The Bluespotted stargazer lives in the sea (marine waters) and is mostly found around open water. Asia: China, Taiwan/Ch Taipei, Hong Kong, Indonesia, Japan, Korea (North) and others

How big does the Bluespotted stargazer get?

The Bluespotted stargazer grows to a maximum of about 30 cm.

Is the Bluespotted stargazer dangerous to humans?

The Bluespotted stargazer is venomous — handle spines with care and seek medical help after a sting if needed. Do not touch or pick up; the fin spines carry venom. For a sting: immerse the wound in water as hot as can be tolerated (about 45 C, not scalding) for 30-90 minutes to break down the venom. For severe pain, swelling or breathing difficulty seek medical help and check tetanus status.

Is the Bluespotted stargazer edible?

Yes, the Bluespotted stargazer is commonly eaten.

More photos

Bluespotted stargazer (Xenocephalus elongatus) — Uranoscopidae — 2
iNaturalist ((c) taiwan_habu, some rights reserved (CC BY-NC))
Bluespotted stargazer (Xenocephalus elongatus) — Uranoscopidae — 3
Wikimedia Commons — Temminck and Schlegel (Public domain) [illustratie]
Bluespotted stargazer (Xenocephalus elongatus) — Uranoscopidae — 4
iNaturalist ((c) orcinusss, some rights reserved (CC BY-NC))
Bluespotted stargazer (Xenocephalus elongatus) — Uranoscopidae — 5
iNaturalist ((c) castle_pendragon, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Bluespotted stargazer sourced
Scientific name
Xenocephalus elongatus
Family
Uranoscopidae

Appearance

Size class
Medium verified
Max length (cm)
30.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown sourced
Pattern
Spots sourced
Tail shape
Rounded inferred
Mouth position
Superior (upward) sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Open water sourced
Min depth (m)
35.0 verified
Max depth (m)
440.0 verified
Natural range
Asia: China, Taiwan/Ch Taipei, Hong Kong, Indonesia, Japan, Korea (North) and others sourced
Origin
Native inferred

Behaviour & biology

Territorial
No inferred
Reproduction
Separate sexes inferred
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Bears venomous spines or tissue; handle with great care. inferred

For anglers

Edibility
Commonly eaten inferred
Fishing method
Can be caught with natural bait or lures, matched to the size and habitat of the species. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Venomous / poisonous verified
First aid
Do not touch or pick up; the fin spines carry venom. For a sting: immerse the wound in water as hot as can be tolerated (about 45 C, not scalding) for 30-90 minutes to break down the venom. For severe pain, swelling or breathing difficulty seek medical help and check tetanus status. sourced

Status & sources

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

Same genus Xenocephalus

More from the family Uranoscopidae

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