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Oxynotus japonicus
Yano & Murofushi, 1985
Japanese roughshark
Classification: Elasmobranchii Squaliformes Oxynotidae
Reference of the original description
A new prickly dogfish, Oxynotus japonicus, from Japan. Japanese Journal of Ichthyology, 32(2), 129–136
A new prickly dogfish, Oxynotus japonicus, from Japan. Japanese Journal of Ichthyology, 32(2), 129–136
Image of the original description
Image in copyright.
Image in copyright.
Description :
Citation: Oxynotus japonicus Yano & Murofushi, 1985: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 10/2025
Please send your images of "Oxynotus japonicus" to info@shark-references.com
Oxynotus japonicusYano & Murofushi, 1985, NMMB-P23359, female, 610 mm TL, fresh © Dr. Hsuan-Ching Ho, National Museum of Marine Biology and Aquarium, Pingtung, Taiwan
Oxynotus japonicusYano & Murofushi, 1985, NMMB-P23359, female, 610 mm TL, fresh © Dr. Hsuan-Ching Ho, National Museum of Marine Biology and Aquarium, Pingtung, Taiwan
Common names
Japanese roughshark
Japanese roughshark
Short Description
Length from snout tip to 1st dorsal fin spine 2.1 and to 2nd dorsal spine 1.2 in PL. Spiracle large, oval, its length 1.7 in horizontal diameter of eye. Spine of 1st dorsal fin sloping slightly backward. Length from tip of 1st dorsal spine to apex of 1st dorsal fin 2.6 times vertical height from tip of spine to fin base. Length from tip of 2nd dorsal spine to apex of 2nd dorsal fin 1.9 times vertical height from tip of spine to fin base. Second dorasal base 1.3 in interspace between 1st and 2nd dorsal fins. [3744]
Length from snout tip to 1st dorsal fin spine 2.1 and to 2nd dorsal spine 1.2 in PL. Spiracle large, oval, its length 1.7 in horizontal diameter of eye. Spine of 1st dorsal fin sloping slightly backward. Length from tip of 1st dorsal spine to apex of 1st dorsal fin 2.6 times vertical height from tip of spine to fin base. Length from tip of 2nd dorsal spine to apex of 2nd dorsal fin 1.9 times vertical height from tip of spine to fin base. Second dorasal base 1.3 in interspace between 1st and 2nd dorsal fins. [3744]
Distribution
Northwest Pacific: Suruga Bay, off Omaezaki, Enshu-nada Sea, Japan [3885], Kueishan Island, northeastern Taiwan [25135]
Records:
1984-1988 6 speciemens by bottom trawl in Suruga Bay (n=5) and off Omaezaki, Enshu-nada Sea (n=1); all female, 50,5 cm - 64,5 cm, 1518-3400 gr weight [3885];
2015 1 speciemens, NMMB-P23359, female, 610 mm TL, Daxi fish market, trawled on the slop near Kueishan Island, northeastern Taiwan, 21 March 2015, ca. 300 m [25135]; Source: www.gbif.org
Northwest Pacific: Suruga Bay, off Omaezaki, Enshu-nada Sea, Japan [3885], Kueishan Island, northeastern Taiwan [25135]
Records:
1984-1988 6 speciemens by bottom trawl in Suruga Bay (n=5) and off Omaezaki, Enshu-nada Sea (n=1); all female, 50,5 cm - 64,5 cm, 1518-3400 gr weight [3885];
2015 1 speciemens, NMMB-P23359, female, 610 mm TL, Daxi fish market, trawled on the slop near Kueishan Island, northeastern Taiwan, 21 March 2015, ca. 300 m [25135]; Source: www.gbif.org
Dentition
Teeth dissimilar in upper and lower jaws. Upper jaw with narrow, erect, smooth-edged teeth. Lower jaw with only one series of functional, broad, bladelike, smooth-edged teeth. Dental formula: (16-19)/(5-6)-1-(5-6) (n=4) (13/5-1-5 in holotype). Shapes of teeth on both jaws of females similar to those of male, but numbers of these teeth slightly greater in females than in male. [3885]
Teeth dissimilar in upper and lower jaws. Upper jaw with narrow, erect, smooth-edged teeth. Lower jaw with only one series of functional, broad, bladelike, smooth-edged teeth. Dental formula: (16-19)/(5-6)-1-(5-6) (n=4) (13/5-1-5 in holotype). Shapes of teeth on both jaws of females similar to those of male, but numbers of these teeth slightly greater in females than in male. [3885]
Remarks
shark-references Species-ID=4480;
shark-references Species-ID=4480;
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