Raja radula

Delaroche, 1809

Rough ray
Classification: Elasmobranchii Rajiformes Rajidae

Reference of the original description
Delaroche, F. (1809)
Suite du mémoire sur les espèces de poissons observées à Iviça. Observations sur quelques-uns des poissons indiqués dans le précédent tableau et descriptions des espèces nouvelles ou peu connues. Annales du Muséum d'Histoire Naturelle, Paris, 13, 313–361

Images of the original description (synonym)
Synonyms / new combinations and misspellings
Batis radula, Raia radula, Raia virgata, Raja atra, Raja cf. radula, Raja (Raja) radula

Raja radula
Holotype: MNHN: A-7512;
Raja atra
Syntype: MNHN: 1588; ZMB: 4603;

Description :

Citation: Raja radula Delaroche, 1809: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 07/2024

Please send your images of "Raja radula" to info@shark-references.com

Raja radula Delaroche, 1809, © FAO, www.fish-base.org
Common names
deu \(T\) Rauer Rochen, deu \(T\) Raurochen, spa Raya áspera, fra \(T\) Raie râpe, eng Rough ray, eng Rough skate, ita Picara spinosa, ita Picara tunna, ita Pichira magnusa, ita Pichira spinusa, ita Rasa, ita Rasa spinosa, ita Raspo, ita Razza scuffina, por Raia-áspersa

Short Description
Diet: Ionian Sea 2010 (data base: 43 specimens, between 13.4–65 cm for males and 18.5–80 for females, 1 empty): The diet of Raja radula was mainly based on crustaceans (88.48%IRI; Liocarcinus pusillus 45.25%IRI, Liocarcinus depurator 12.38% and Liocarcinus arquatus 5.82%), followed by algae 3.36%IRI, polychaetes (1.93%IRI) and molluscs (0.09 %IRI) [17749]; Gulf of Gabès (central Mediterranean Sea) 2013 (data base: 950 specimens, between 139 to 383 mm, 183 empty): Crustaceans 63.80%IRI, Teleosts 34.66%IRI, Molluscs 1.28%IRI, Polycheates 0.18%IRI, Sipunculids 0.01%IRI, Echinoderms 0.07%IRI [17748];

Eastern Atlantic: known only from the Mediterranean but may penetrate through the Strait of Gibraltar and possibly to northern Morocco. Some Atlantic records probably misidentifications of Raja naevus and/or Raja africana. Source: www.gbif.org

Human uses
fisheries: commercial

Oviparous, paired eggs are laid. Embryos feed solely on yolk [733]. Spawns throughout the year with maximum number of egg-cases laid in late spring and summer, embryos developing in about 4 months [7182]. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother [17086]. Ranges from coastal waters to about 300 m depth. Feeds on all kinds of bottom animals.

Size / Weight / Age
70.0 cm TL (male/unsexed; [7180]); males: 13.4–65 cm [17748]; females: 18.5–80 [17748]

demersal; marine; depth range ? - 300 m [7180]

shark-references Species-ID=5756;

Parasites (arranged by Jürgen Pollerspöck)
  • Myxidium tunisiensis Elloumi, Rangel, Santos & Bahri, 2021 [30121]

  • Calicotyle kroyeri Diesing, 1850 [7377]
  • Empruthotrema raiae (Maccallum, 1916) Johnston & Tiegs, 1922 [31118]
  • Rajonchocotyle sp. [31118]