Raja straeleni

Poll, 1951


Biscuit skate
Classification: Elasmobranchii Rajiformes Rajidae

Reference of the original description
Poll, M. (1951)
Expédition océanographique Belge dans les eaux côtières africaines de l'atlantique sud (1948 - 1949). Poissons. I. Généralités, II. Sélaciens et Chimères. Résultats scientifiques de l'expédition océanographique belge dans les eaux côtières de l'Atlantique Sud(1948–1949), 4(1): 1–154

Synonyms / new combinations and misspellings
Raja rouxi, Raja (Raja) rouxi, Raja (Raja) straeleni

Types
Raja straeleni
Holotype: IRSNB: 99; Paratype: IRSNB: 104; IRSNB: 107; IRSNB: 106; IRSNB: 105; IRSNB: 103; IRSNB: 102; IRSNB: 101; IRSNB: 100; Syntype: MRAC: 80331 MRAC: 80332 MRAC: 80327 MRAC: 80328 MRAC: 80329 MRAC: 80330
Raja rouxi
Syntype: MNHN: 1969-0227; MNHN: 1969-0203; MNHN: 1969-0214;


Description :


Citation: Raja straeleni Poll, 1951: 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 straeleni" to info@shark-references.com

Raja straeleni Poll, 1951 ERB 0466, female, 77,0 cm TL, 56,0 cm DW, South Africa © Frederik H. Mollen (Elasmobranch Research Belgium)
Common names
spa Raya manchada, fra \(T\) Raie tachetée, eng Biscuit skate, eng False thornback skate, eng Skate, eng Spotted skate, por Peixe-areia, por Raia-pontuada-africana

Short Description
A black-spotted skate with a blunt, angular snout, a long, stout tail, and a broad angular disc; strong thorns on upper surface of disc and tail at all stages, sometimes on underside in large individuals [536]. Brown to grey dorsally, with small to large black spots, whorls and blotches; many with gold and black, traversely oblong eyespot on each pectoral base; white ventrally with no dark pores [536]. Juveniles have no dark spots above [20085].

Distribution
Eastern Atlantic: Rio de Oro, Western Sahara to South Africa. Source: www.gbif.org

Human uses
fisheries: commercial; gamefish: yes

Biology
Oviparous, paired eggs are laid. Embryos feed solely on yolk [733]. Found in shallow enclosed bays and on the slope [536]. Feeds on invertebrates, bony fishes and fish offal.

Size / Weight / Age
70.0 cm TL (male/unsexed; [20084]); 67 cm TL (female); max. published weight: 1,385 g (Ref. 377); max. published weight: 1,685.0 g

Habitat
demersal; oceanodromous; marine; depth range 80 - 800 m [5130], usually 100 - 300 m [20084]

Remarks
shark-references Species-ID=5800;

Parasites (arranged by Jürgen Pollerspöck)
Myxosporea
  • Chloromyxum ornamentum Lisnerova, Martinek, Alama-Bermejo, Bouberlova, Schaeffner, Nkabi, Holzer & Bartosova-Sojkova, 2022 [31228]
  • Chloromyxum schulmani Kovaljova, 1988 [32172]

Monogenea
  • Rajonchocotyle emarginata (Olsson, 1876) [31773]

Cestoda
  • Acanthobothrium crassus Spuy, Smit & Schaeffner, 2020 [29269]
  • Acanthobothrium dolichocollum Spuy, Smit & Schaeffner, 2020 [29269]
  • Acanthobothrium microhabentes Spuy, Smit & Schaeffner, 2020 [29269]
  • Acanthobothrium microtenuis Spuy, Smit & Schaeffner, 2020 [29269]
  • Echinobothrium dorothyae Caira, Pickering, Schulman & Hanessian, 2013 [18038] [19536] [27172]
  • Grillotia sasciae Oosthuizen, Acosta, Smit & Schaeffner, 2021 [29582]

Copepoda