Catalog of Fishes
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Iago gopalakrishnani
Bineesh, Beura & Akhilesh, 2025
Classification: Elasmobranchii Carcharhiniformes Triakidae
Reference of the original description
Description of a new species of hound shark of the genus Iago (Carcharhiniformes: Triakidae) from the northern Indian Ocean. Indian Journal of Fisheries, 72(1), 18–28
Description of a new species of hound shark of the genus Iago (Carcharhiniformes: Triakidae) from the northern Indian Ocean. Indian Journal of Fisheries, 72(1), 18–28
Types
Iago gopalakrishnani
Holotype: ZSI: MBRC/F/3164; Paratype: ZSI: MBRC/F/3165; ZSI: MBRC/F/3166;
Iago gopalakrishnani
Holotype: ZSI: MBRC/F/3164; Paratype: ZSI: MBRC/F/3165; ZSI: MBRC/F/3166;
Images of types
Description :
Citation: Iago gopalakrishnani Bineesh, Beura & Akhilesh, 2025: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 04/2025
Please send your images of "Iago gopalakrishnani" to info@shark-references.com
Iago gopalakrishnani Bineesh, Beura & Akhilesh, 2025; Holotype dorsal view, Reg. No. MBRCF3164, adult female, 447 mm TL. (b) Paratype Dorsal view, Reg. No. MBRCF3165, adult male, 450 mm TL, (c) Paratype lateral view © Bineesh et al. 2025
Iago gopalakrishnani Bineesh, Beura & Akhilesh, 2025; Holotype dorsal view, Reg. No. MBRCF3164, adult female, 447 mm TL. (b) Paratype Dorsal view, Reg. No. MBRCF3165, adult male, 450 mm TL, (c) Paratype lateral view © Bineesh et al. 2025
Common names
Indian houndshark
Indian houndshark
Short Description
Original diagnosis of Bineesh, Beura, Das, Nashad & Akhilesh, 2025 [34354]: A species of Iago with a moderately pointed, narrow snout, pre-oral length 22.4-25% head length, 0.6-0.9 in mouth width; pre-second dorsal length 52.1-59.3% TL; eye length 15-19.7% head length; gill slit rather short, first gill-slit height 41.5-47.1% eye length; antero-lateral teeth straight to slightly oblique, blade-like, with 1-3 broad, smooth distal cusplets; upper labial furrows slightly longer than lower labial furrows, upper 1.6-2.2% TL; first dorsal fin anterior margin 9.5-11.9% TL, height 5.8-7% TL, first dorsal height 2.8-3.7 in head length; pre-dorsal, inter-dorsal or post-dorsal ridges or raised skin absent; inter-dorsal space 18.8-23.5% TL; first dorsal-fin origin posterior or over vertical line through pectoral-fin insertion; Body colour dark chocolate brown to black, dusky to dark brown dorsally and gradually paling to dusky laterally in the lower half and ventrally, dusky to black dorsal fins.
Original diagnosis of Bineesh, Beura, Das, Nashad & Akhilesh, 2025 [34354]: A species of Iago with a moderately pointed, narrow snout, pre-oral length 22.4-25% head length, 0.6-0.9 in mouth width; pre-second dorsal length 52.1-59.3% TL; eye length 15-19.7% head length; gill slit rather short, first gill-slit height 41.5-47.1% eye length; antero-lateral teeth straight to slightly oblique, blade-like, with 1-3 broad, smooth distal cusplets; upper labial furrows slightly longer than lower labial furrows, upper 1.6-2.2% TL; first dorsal fin anterior margin 9.5-11.9% TL, height 5.8-7% TL, first dorsal height 2.8-3.7 in head length; pre-dorsal, inter-dorsal or post-dorsal ridges or raised skin absent; inter-dorsal space 18.8-23.5% TL; first dorsal-fin origin posterior or over vertical line through pectoral-fin insertion; Body colour dark chocolate brown to black, dusky to dark brown dorsally and gradually paling to dusky laterally in the lower half and ventrally, dusky to black dorsal fins.
Dentition
Teeth including symphysials in 50/45 (48-56/45-52) rows with 3-4 functional series. Tooth formula for upper jaw is 24+3+23 (23-27+3+21-26) and lower jaw is 21+3+21 (21-24+3-4+21-24). Lower jaw teeth are slightly longer than the upper jaw; upper and lower jaw lateral teeth are similar in size and shape. Upper jaw anterior teeth symphyseal are slightly smaller than the anterolateral teeth. Anterolateral teeth straight to slightly oblique, sharp and blade–like, with 1-3 broad, smooth distal cusplets. Upper jaw symphyseal teeth cusp somewhat oblique towards postero-lateral side; lower jaw symphysials upper series cusps straight and pointed, lower series cusps curved posteriorly. Upper jaw lateral teeth inclined laterally towards posterior side with serrations and transverse ridges [34354]
Teeth including symphysials in 50/45 (48-56/45-52) rows with 3-4 functional series. Tooth formula for upper jaw is 24+3+23 (23-27+3+21-26) and lower jaw is 21+3+21 (21-24+3-4+21-24). Lower jaw teeth are slightly longer than the upper jaw; upper and lower jaw lateral teeth are similar in size and shape. Upper jaw anterior teeth symphyseal are slightly smaller than the anterolateral teeth. Anterolateral teeth straight to slightly oblique, sharp and blade–like, with 1-3 broad, smooth distal cusplets. Upper jaw symphyseal teeth cusp somewhat oblique towards postero-lateral side; lower jaw symphysials upper series cusps straight and pointed, lower series cusps curved posteriorly. Upper jaw lateral teeth inclined laterally towards posterior side with serrations and transverse ridges [34354]
Remarks
shark-references Species-ID=17583;
shark-references Species-ID=17583;
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