Home · Glaucostegidae · Blackchin guitarfish
Blackchin guitarfish (Glaucostegus cemiculus) — Glaucostegidae

Blackchin guitarfish

Glaucostegus cemiculus
CR · Critically Endangered

The Blackchin guitarfish (Glaucostegus cemiculus) is a saltwater fish of the family Glaucostegidae that grows up to 242 cm.

Length
242 cm
Water
Saltwater
Depth
9.0–100.0 m
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Flat / disc-shaped
Substrate
Sand / mud bottom
Danger
Harmless
Edibility
Commonly eaten

Description

The blackchin guitarfish is a large giant guitarfish of the family Glaucostegidae reaching about 2.4 metres long. It forms a transition between shark and ray: the front is flattened, with a long, pointed, translucent snout bearing a dark spot at the tip (the 'black chin'), while the rear body is sturdy and shark-like, with two dorsal fins and a powerful tail. Unlike stingrays it lacks a venomous spine. The species lives on sand and mud bottoms of shallow coastal water and estuaries in the eastern Atlantic and the Mediterranean. On the bottom it crushes crabs, shrimps, molluscs and small fish. Through heavy fishing - partly for the fin trade - it has declined sharply and is assessed as Critically Endangered (CR).

Frequently asked questions

How do you recognise the Blackchin guitarfish?

The Blackchin guitarfish has a flattened, disc-shaped body, is mainly brown and shows a plain pattern.

Where does the Blackchin guitarfish live?

The Blackchin guitarfish lives in the sea (marine waters) and is mostly found around sand or mud bottom.

How big does the Blackchin guitarfish get?

The Blackchin guitarfish grows to a maximum of about 242 cm. On average the species is around 150 cm.

Is the Blackchin guitarfish dangerous to humans?

No, the Blackchin guitarfish is harmless to humans.

Is the Blackchin guitarfish edible?

Yes, the Blackchin guitarfish is commonly eaten.

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →

All data

Identification

Dutch name
Zwartkingitaarrog verified
English name
Blackchin guitarfish verified
Scientific name
Glaucostegus cemiculus
Family
Glaucostegidae
Other names
Blackchin guitarfish verified

Appearance

Size class
Extra large verified
Max length (cm)
242.0 verified
Average length (cm)
150.0 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
Min depth (m)
9.0 verified
Max depth (m)
100.0 verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore verified
Social behaviour
Solitary verified
Territorial
No verified
Activity
Nocturnal inferred
Reproduction
Separate sexes verified
Sexual dimorphism
No verified

For anglers

Edibility
Commonly eaten verified
Fishing method
Bodemvissen met natuurlijk aas (worm, garnaal of vis) op of vlak boven de bodem. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified

Status & sources

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

Same genus Glaucostegus

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →