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Rough ray (Raja radula) — Rajidae

Rough ray

Raja radula
Family: Rajidae
EN · Endangered

The Rough ray (Raja radula) is a saltwater fish of the family Rajidae that grows up to 70 cm.

Length
70 cm
Water
Saltwater
Depth
0–300.0 m
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Flat / disc-shaped
Substrate
Sand / mud bottom
Danger
Harmless
Edibility
Commonly eaten

Description

The rough ray is a diamond-shaped ray of the family Rajidae (true skates) reaching a disc width of about 70 cm. The upper side is brown with fine mottling and feels rough like a rasp due to its densely set granular skin denticles - hence the name 'radula'. Rows of thorns run over the back and tail, but unlike stingrays it lacks a venomous spine. The species is endemic to the Mediterranean and lives on sand and mud bottoms of the continental shelf. On the bottom it hunts crabs, shrimps, crustaceans and small fish. It is egg-laying. Through fishing pressure and bycatch it has declined and is assessed as Endangered (EN).

Frequently asked questions

How do you recognise the Rough ray?

The Rough ray has a flattened, disc-shaped body, is mainly brown and shows a spots pattern.

Where does the Rough ray live?

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

How big does the Rough ray get?

The Rough ray grows to a maximum of about 70 cm.

Is the Rough ray dangerous to humans?

No, the Rough ray is harmless to humans.

Is the Rough ray edible?

Yes, the Rough ray is commonly eaten.

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All data

Identification

Dutch name
Radularog verified
English name
Rough ray verified
Scientific name
Raja radula
Family
Rajidae
Other names
Rough ray; Rough skate verified

Appearance

Size class
Large verified
Max length (cm)
70.0 verified
Body shape
Flat / disc-shaped verified
Dominant colour
Brown sourced
Pattern
Spots 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)
300.0 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 Raja

More from the family Rajidae

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