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Glaucostegus obtusus
Müller & Henle, 1841
Widenose guitarfish
Classification: Elasmobranchii Rhinopristiformes Glaucostegidae
Reference of the original description
Systematische Beschreibung der Plagiostomen. Berlin, Veit, pp. 1–200
Systematische Beschreibung der Plagiostomen. Berlin, Veit, pp. 1–200
Image of the original description
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Rhinobatos obtusus (Müller & Henle, 1841), valid as: Glaucostegus obtusus Müller & Henle, 1841
Rhinobatos obtusus (Müller & Henle, 1841), valid as: Glaucostegus obtusus Müller & Henle, 1841
Synonyms / new combinations and misspellings
Rhinobatos obtusus, Rhinobatos (Glaucostegus) obtusus, Rhinobatus obtusus, Rhinobatus (Rhinobatus) obtusus
Rhinobatos obtusus, Rhinobatos (Glaucostegus) obtusus, Rhinobatus obtusus, Rhinobatus (Rhinobatus) obtusus
Types
Glaucostegus obtusus
Rhinobatos obtusus
Syntype: MNHN: A-7855; MNHN: A-7857; MNHN: A-7912; MNHN: 3470; MNHN: A-8585; ZMB: 7589 ZSL: uncat., whereabouts unknown
Glaucostegus obtusus
Rhinobatos obtusus
Syntype: MNHN: A-7855; MNHN: A-7857; MNHN: A-7912; MNHN: 3470; MNHN: A-8585; ZMB: 7589 ZSL: uncat., whereabouts unknown
Description :
Citation: Glaucostegus obtusus Müller & Henle, 1841: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 12/2024
Please send your images of "Glaucostegus obtusus" to info@shark-references.com
Glaucostegus obtusus Müller & Henle, 1841, from Marve, Malad, Mumbai, date of catch 22.10.2017, TL ca. 100 cm © Rohan Rao, India
Glaucostegus obtusus Müller & Henle, 1841, from Marve, Malad, Mumbai, date of catch 22.10.2017, TL ca. 100 cm © Rohan Rao, India
Common names
Blunt shovel nose ray, Grey guitarfish, Widenose guitarfish
Blunt shovel nose ray, Grey guitarfish, Widenose guitarfish
Short Description
Snout rather obtuse, rostrum ridge separated throughout its length. Width of the mouth about 1.9 times in snout length. One skinny projection from hind margin of spiracles. Back with small tubercles, and some spiniform. First dorsal fin well behind pelvic fin. The length of the nostril twice the width of the mouth and equal to internarial space. Colour : Body grey to brownish above, white below; large specimens have occasionally black blotch on back. [12520]
Snout rather obtuse, rostrum ridge separated throughout its length. Width of the mouth about 1.9 times in snout length. One skinny projection from hind margin of spiracles. Back with small tubercles, and some spiniform. First dorsal fin well behind pelvic fin. The length of the nostril twice the width of the mouth and equal to internarial space. Colour : Body grey to brownish above, white below; large specimens have occasionally black blotch on back. [12520]
Distribution
Indo-West Pacific: off Pakistan to the "Malay Archipelago"; and the "East Indies", with more specific records from the area not confirmed. South African records refer to Rhinobatos blochii and Rhinobatos leucospilus (Compagno pers. comm.). Source: www.gbif.org
Indo-West Pacific: off Pakistan to the "Malay Archipelago"; and the "East Indies", with more specific records from the area not confirmed. South African records refer to Rhinobatos blochii and Rhinobatos leucospilus (Compagno pers. comm.). Source: www.gbif.org
Biology
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures [733].
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures [733].
Habitat
demersal; marine
demersal; marine
Remarks
shark-references Species-ID=14155; CITES: (see: Protected Species for more details) Convention on International Trade in Endangered Speciesof Wild Fauna and Flora annex: II; Council Regulation 2017/160 annex: B
shark-references Species-ID=14155; CITES: (see: Protected Species for more details) Convention on International Trade in Endangered Speciesof Wild Fauna and Flora annex: II; Council Regulation 2017/160 annex: B
