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Giant guitarfish (Rhynchobatus djiddensis) — Rhinidae

Giant guitarfish

Rhynchobatus djiddensis
Family: Rhinidae
CR · Critically Endangered

The Giant guitarfish (Rhynchobatus djiddensis) is a brackish-water fish of the family Rhinidae that grows up to 310 cm.

Length
310 cm
Water
Brackish
Depth
1.0–75.0 m
Diet
Carnivore
Behaviour
Solitary
Body shape
Elongated (eel-like)
Substrate
Stone or rock
Danger
Harmless
Range
Western Indian Ocean, inshore and in shallow estuaries.
Edibility
Commonly eaten

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Description

The giant guitarfish, also called the whitespotted wedgefish, is a large ray-like fish of the family Rhinidae from the western Indian Ocean. The species can reach over three metres and has a wedge-shaped, flattened front with the disc and a muscular, shark-like tail with two dorsal fins. The grey upper side bears rows of white spots. It lives inshore and in shallow estuaries and feeds on crabs, lobsters, bivalves, squid and small fishes. The species is ovoviviparous. Owing to strong demand for meat and especially fins in Asian markets it is severely overfished and assessed by the IUCN as critically endangered (CR).

Frequently asked questions

How do you recognise the Giant guitarfish?

The Giant guitarfish has an elongate, eel-like body, is mainly silver-grey and shows a spots pattern. Enormous wedgefish with a shark-like tail; critically endangered (CR) through the demand for meat and fins.

Where does the Giant guitarfish live?

The Giant guitarfish lives in brackish water and is mostly found around stony or rocky ground. Western Indian Ocean, inshore and in shallow estuaries.

How big does the Giant guitarfish get?

The Giant guitarfish grows to a maximum of about 310 cm. On average the species is around 150 cm.

Is the Giant guitarfish dangerous to humans?

No, the Giant guitarfish is harmless to humans. None required: this species is harmless to humans.

Is the Giant guitarfish edible?

Yes, the Giant guitarfish is commonly eaten.

More photos

Giant guitarfish (Rhynchobatus djiddensis) — Rhinidae — 2
iNaturalist ((c) Vlada Trailin, some rights reserved (CC BY-NC))
Giant guitarfish (Rhynchobatus djiddensis) — Rhinidae — 3
Randall, John E. (CC0 1.0) via GBIF — USNM
Giant guitarfish (Rhynchobatus djiddensis) — Rhinidae — 4
Wikimedia Commons — Peter Giger (CC BY 2.0)
Giant guitarfish (Rhynchobatus djiddensis) — Rhinidae — 5
Wikimedia Commons — This illustration was made by Citron You must credit this : Citron / CC-BY-SA-3.0 (CC BY-SA 3.0)
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All data

Identification

English name
Giant guitarfish verified
Scientific name
Rhynchobatus djiddensis
Family
Rhinidae
Other names
Giant guitarfish; Giant sandshark; Guitar fish; Plough fish; Sand shark; Spotted guitarfish; White spotted shovelnose ray; White-spotted guitarfish; Sandy; Shark-ray; Shovel nose; Shovelnose verified

Appearance

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

Habitat & distribution

Water type
Brackish sourced
Substrate
Stone or rock sourced
Min depth (m)
1.0 verified
Max depth (m)
75.0 verified
Natural range
Western Indian Ocean, inshore and in shallow estuaries. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Crabs, lobsters, bivalves, squid and small fishes sourced
Social behaviour
Solitary inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Enormous wedgefish with a shark-like tail; critically endangered (CR) through the demand for meat and fins. sourced

For anglers

Edibility
Commonly eaten sourced
Fishing method
Fishing with natural bait (fish, shrimp, worm) or lures close to reef and rock structures. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced
First aid
None required: this species is harmless to humans. sourced

Status & sources

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

Same genus Rhynchobatus

More from the family Rhinidae

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