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Whitespotted guitarfish (Rhinobatos albomaculatus) — Rhinobatidae

Whitespotted guitarfish

Rhinobatos albomaculatus
Family: Rhinobatidae
CR · Critically Endangered

The Whitespotted guitarfish (Rhinobatos albomaculatus) is a saltwater fish of the family Rhinobatidae that grows up to 75 cm.

Length
75 cm
Water
Saltwater
Depth
0–35.0 m
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Flat / disc-shaped
Substrate
Sand / mud bottom
Danger
Harmless
Range
Eastern Atlantic along the West African coast (Mauritania to Angola), above sandy and silty bottoms in shallow coastal water.
Edibility
Commonly eaten

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Description

The whitespotted guitarfish is a guitarfish of the family Rhinobatidae reaching about 75 cm long. It forms a transition between shark and ray: the front is flattened and heart-shaped with a pointed, translucent snout, while the rear body is sturdy and shark-like, with two dorsal fins and a powerful tail. The grey-brown upper side is scattered with small white spots. Unlike stingrays it lacks a venomous spine. The species lives on sand and mud bottoms of shallow coastal water, where it often lies half-buried. On the bottom it searches for crabs, shrimps, crustaceans, molluscs and small fish, which it crushes with flat tooth plates. Through heavy fishing and bycatch it has declined sharply and is assessed as Critically Endangered (CR).

Frequently asked questions

How do you recognise the Whitespotted guitarfish?

The Whitespotted guitarfish has a flattened, disc-shaped body, is mainly brown and shows a plain pattern. Transitional form between shark and ray: a flattened, heart-shaped front with a pointed snout merges into a sturdy, shark-like hind body with two dorsal fins.

Where does the Whitespotted guitarfish live?

The Whitespotted guitarfish lives in the sea (marine waters) and is mostly found around sand or mud bottom. Eastern Atlantic along the West African coast (Mauritania to Angola), above sandy and silty bottoms in shallow coastal water.

How big does the Whitespotted guitarfish get?

The Whitespotted guitarfish grows to a maximum of about 75 cm. On average the species is around 60 cm.

Is the Whitespotted guitarfish dangerous to humans?

No, the Whitespotted guitarfish is harmless to humans. Unlike stingrays a guitarfish has no venomous tail spine and is harmless; the rough skin can abrade, however.

Is the Whitespotted guitarfish edible?

Yes, the Whitespotted guitarfish is commonly eaten.

More photos

Whitespotted guitarfish (Rhinobatos albomaculatus) — Rhinobatidae — 2
iNaturalist ((c) Tom JAMONNEAU, some rights reserved (CC BY-NC))
Whitespotted guitarfish (Rhinobatos albomaculatus) — Rhinobatidae — 3
Tom JAMONNEAU (CC BY-NC 4.0) via GBIF — iNaturalist
Whitespotted guitarfish (Rhinobatos albomaculatus) — Rhinobatidae — 4
iNaturalist ((c) Tom JAMONNEAU, some rights reserved (CC BY-NC))
Whitespotted guitarfish (Rhinobatos albomaculatus) — Rhinobatidae — 5
iNaturalist ((c) Tom JAMONNEAU, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Whitespotted guitarfish verified
Scientific name
Rhinobatos albomaculatus
Family
Rhinobatidae
Other names
White-spotted guitarfish verified

Appearance

Size class
Large verified
Max length (cm)
75 verified
Average length (cm)
60.0 verified
Body shape
Flat / disc-shaped verified
Dominant colour
Brown sourced
Pattern
Plain sourced
Tail shape
Straight inferred
Mouth position
Inferior (downward) inferred
Lips
Thin inferred
Barbels
No verified
Dorsal fins
Two separate sourced
Dorsal spines
No verified

Habitat & distribution

Water type
Saltwater verified
Substrate
Sand / mud bottom verified
Max depth (m)
35.0 verified
Natural range
Eastern Atlantic along the West African coast (Mauritania to Angola), above sandy and silty bottoms in shallow coastal water. verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore verified
Diet (detail)
Crabs, shrimps, crustaceans, molluscs and small fishes from the bottom sourced
Social behaviour
Solitary verified
Territorial
No verified
Activity
Nocturnal inferred
Reproduction
Separate sexes verified
Sexual dimorphism
No verified
Seasonality
Bottom-dweller of shallow coastal water; ovoviviparous (live-bearing), with a few young per litter. sourced
Special features
Transitional form between shark and ray: a flattened, heart-shaped front with a pointed snout merges into a sturdy, shark-like hind body with two dorsal fins. sourced

For anglers

Edibility
Commonly eaten verified
Fishing method
Bottom fishing with natural bait (worm, shrimp or fish) on or just above the seabed. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified
First aid
Unlike stingrays a guitarfish has no venomous tail spine and is harmless; the rough skin can abrade, however. sourced

Status & sources

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

Same genus Rhinobatos

More from the family Rhinobatidae

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