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Butterfly ray (Gymnura poecilura) — Gymnuridae

Butterfly ray

Gymnura poecilura
Family: Gymnuridae
NT · Near Threatened

The Butterfly ray (Gymnura poecilura) is a saltwater fish of the family Gymnuridae that grows up to 250 cm.

Length
250 cm
Water
Saltwater
Depth
0–80.0 m
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Irregular
Substrate
Sand / mud bottom
Danger
Venomous / poisonous
Range
Indo-West Pacific
Edibility
Rarely eaten

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Description

The longtail butterfly ray is a large ray from the Indo-West Pacific. The species grows to about 250 cm including the tail and has a very wide, rhomboid, wing-like body disc and a thin, banded tail with a small venomous spine. As a bottom-dweller it often lies half-buried in sand and mud bottoms of shallow coastal and estuarine water and searches for crustaceans, molluscs and small fish. The venomous spine can inflict a painful wound. Owing to fishing the IUCN assesses it as Near Threatened (NT).

Frequently asked questions

How do you recognise the Butterfly ray?

The Butterfly ray has an irregular in shape body, is mainly brown and shows a spots pattern. Very broad wing-like disc and a thin tail with a venomous spine; burrowing butterfly ray

Where does the Butterfly ray live?

The Butterfly ray lives in the sea (marine waters) and is mostly found around sand or mud bottom. Indo-West Pacific

How big does the Butterfly ray get?

The Butterfly ray grows to a maximum of about 250 cm.

Is the Butterfly ray dangerous to humans?

The Butterfly ray is venomous — handle spines with care and seek medical help after a sting if needed. If stung by the tail spine: immerse the wound immediately in water as hot as tolerable (about 45 C) for 30-90 minutes to break down the venom, remove visible spine fragments, and seek medical help.

Is the Butterfly ray edible?

The Butterfly ray is rarely eaten.

More photos

Butterfly ray (Gymnura poecilura) — Gymnuridae — 2
Wikimedia Commons — Dr. Raju Kasambe (CC BY-SA 4.0)
Butterfly ray (Gymnura poecilura) — Gymnuridae — 3
iNaturalist ((c) Dilshad Farahnaz Tasnima, some rights reserved (CC BY-NC))
Butterfly ray (Gymnura poecilura) — Gymnuridae — 4
iNaturalist ((c) Nitiroj Boonsai, some rights reserved (CC BY-NC))
Butterfly ray (Gymnura poecilura) — Gymnuridae — 5
Randall, John E. (CC0 1.0) via GBIF — USNM
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All data

Identification

English name
Butterfly ray verified
Scientific name
Gymnura poecilura
Family
Gymnuridae
Other names
Long-tailed butterfly ray; Longtailed butterfly-ray; Longtail butterfly ray verified

Appearance

Size class
Extra large verified
Max length (cm)
250.0 verified
Body shape
Irregular sourced
Dominant colour
Brown sourced
Pattern
Spots sourced
Tail shape
Rounded sourced
Mouth position
Inferior (downward) sourced
Lips
Thin sourced
Barbels
No sourced
Dorsal fins
One continuous sourced
Dorsal spines
No sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Sand / mud bottom sourced
Max depth (m)
80.0 verified
Natural range
Indo-West Pacific verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Crustaceans, molluscs and small fishes inferred
Social behaviour
Solitary sourced
Territorial
No sourced
Activity
Nocturnal sourced
Reproduction
Separate sexes sourced
Sexual dimorphism
No sourced
Seasonality
Burrowing coastal butterfly ray; present year-round. sourced
Special features
Very broad wing-like disc and a thin tail with a venomous spine; burrowing butterfly ray sourced

For anglers

Edibility
Rarely eaten sourced
Fishing method
Net fishing sourced
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Venomous / poisonous verified
First aid
If stung by the tail spine: immerse the wound immediately in water as hot as tolerable (about 45 C) for 30-90 minutes to break down the venom, remove visible spine fragments, and seek medical help. verified

Status & sources

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

Same genus Gymnura

More from the family Gymnuridae

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