Chimaera buccanigella

CLERKIN, EBERT & KEMPER, 2017



Classification: Holocephali Chimaeriformes Chimaeridae

Reference of the original description
CLERKIN, P.J. & EBERT, D.A. & KEMPER, J.M. (2017)
New species of Chimaera (Chondrichthyes: Holocephali: Chimaeriformes: Chimaeridae) from the Southwestern Indian Ocean. Zootaxa, 4312 (1): 1–37

Types
Chimaera buccanigella
Holotype: CAS: 242335;

Images of types

Description :


Citation: Chimaera buccanigella CLERKIN, EBERT & KEMPER, 2017: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 01/2021

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Chimaera buccanigella CLERKIN, EBERT & KEMPER, 2017, Holotype CAS 242335, immature female, 830 mm TL, 397 mm BDL b) Illustration of holotype c) Anterior view of holotype highlighting dusky mouth © CLERKIN, EBERT & KEMPER, 2017
Common names
fra \(T\) Chimère bouche-foncée, eng Dark-mouth Chimaera

Short Description
Original diagnose after CLERKIN, EBERT & KEMPER, 2017 [25662]: Chimaera buccanigella, sp. nov. is distinguishable from other members of the genus by the following combination of characters: medium-sized species with moderate head length, 28.3% BDL, eyes very large, 9.6% BDL, with defined suborbital ridge, relatively long snout measuring 13.1% BDL; trunk tapering rapidly into long tail, 60.4% BDL; uniform light tan color, not iridescent, no defined patterning, spots, reticulations, or mottling, dark sooty brown on snout, dark markings in and around mouth (Fig. 17c); pectoral fins with short anterior margin, 36.6% BDL, pelvic fins broad, pointed distally, tear-drop shaped, with short anterior margin, 22.1% BDL; dorsal spine long, thin, and very straight, height of spine not exceeding height of first dorsal fin, when depressed just reaches origin of second dorsal fin; second dorsal fin not undulating, fins feathery, jagged, and easily frayed. Structure of the NADH2 gene. Chimaera buccanigella, sp. nov. is distinguishable from its closest congeners, Chimaera obscura Didier et al. 2008, and Chimaera opalescens Luchetti et al. 2001, by a combination of characters: small dorsal spine, generally small fins, small first dorsal fin height, small second dorsal fin anterior height, moderately large eyes, generally elongate head, body, and snout, and coloration.

Distribution
Known only from the deep waters of the Madagascar Ridge, in the Southwestern Indian Ocean (33°21'S–42°22'E to 33°49'S–44°50'E) and southern part of the Madagascar Ridge on a seamount (33o49’S, 42o22’E) associated with Walters Shoal in the Southwestern Indian Ocean [25662]

Size / Weight / Age
729 mm TL - 861 mm TL, 338 mm - 401 mm BDL [25662]

Habitat
marine; depth range: 495 m−960 m depth [25662]

Dentition
Tooth plates are smoky-gray in color, and lower tooth plates appear to lack visible rods. The type specimens were not dissected for detailed internal examination. [25662]

Remarks
shark-references Species-ID=14936;