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Guitarfish (Acroteriobatus annulatus) — Rhinobatidae

Guitarfish

Acroteriobatus annulatus
Family: Rhinobatidae
VU · Vulnerable

The Guitarfish (Acroteriobatus annulatus) is a brackish-water fish of the family Rhinobatidae that grows up to 140 cm.

Length
140 cm
Water
Brackish
Depth
75.0–75 m
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless
Range
Southern Africa
Edibility
Commonly eaten

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Description

The lesser sandshark is a guitarfish from southern African waters, ranging from Angola along South Africa to southern Mozambique. It has a flattened, shark-like body with a violin-shaped head disc and two dorsal fins on the tail. A bottom-dweller, the fish lives on sandy coastal bottoms down to about 75 metres and feeds on crustaceans, bivalves, polychaete worms and small fishes. The species is ovoviviparous: 2 to 10 pups are born in summer. Its flesh is esteemed and the fish is taken by surf anglers. Owing to fishing pressure the species is listed as Vulnerable (VU) on the IUCN Red List.

Frequently asked questions

How do you recognise the Guitarfish?

The Guitarfish has an elongate, eel-like body, is mainly brown and shows a spots pattern. Violin-shaped head shield; live-bearing with 2 to 10 young per litter

Where does the Guitarfish live?

The Guitarfish lives in brackish water and is mostly found around sand or mud bottom. Southern Africa

How big does the Guitarfish get?

The Guitarfish grows to a maximum of about 140 cm.

Is the Guitarfish dangerous to humans?

No, the Guitarfish is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.

Is the Guitarfish edible?

Yes, the Guitarfish is commonly eaten.

More photos

Guitarfish (Acroteriobatus annulatus) — Rhinobatidae — 2
Joshua Rains (CC BY-NC 4.0) via GBIF — iNaturalist
Guitarfish (Acroteriobatus annulatus) — Rhinobatidae — 3
iNaturalist ((c) mary-hunter, some rights reserved (CC BY-NC))
Guitarfish (Acroteriobatus annulatus) — Rhinobatidae — 4
Wikimedia Commons — Amada44 (CC BY-SA 3.0)
Guitarfish (Acroteriobatus annulatus) — Rhinobatidae — 5
Wikimedia Commons — Amada44 (CC BY-SA 3.0)
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All data

Identification

English name
Guitarfish verified
Scientific name
Acroteriobatus annulatus
Family
Rhinobatidae
Other names
Lesser guitarfish; Lesser sandshark; Sandshark verified

Appearance

Size class
Extra large verified
Max length (cm)
140.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown inferred
Pattern
Spots inferred
Tail shape
Straight inferred
Mouth position
Inferior (downward) sourced
Lips
Thin sourced
Barbels
No sourced
Dorsal fins
Two separate sourced
Dorsal spines
No sourced

Habitat & distribution

Water type
Brackish sourced
Substrate
Sand / mud bottom sourced
Min depth (m)
75.0 verified
Max depth (m)
75 sourced
Natural range
Southern Africa verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Crustaceans, bivalves, polychaetes and small fishes sourced
Social behaviour
Solitary inferred
Territorial
No sourced
Activity
Nocturnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No sourced
Seasonality
Young are born in summer; ovoviviparous. sourced
Special features
Violin-shaped head shield; live-bearing with 2 to 10 young per litter sourced

For anglers

Edibility
Commonly eaten sourced
Fishing method
Surf fishing with natural bait over sandy coastal bottoms. sourced
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced
First aid
This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status. verified

Status & sources

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

Same genus Acroteriobatus

More from the family Rhinobatidae

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