Hydrolagus homonycteris

Didier, 2008


Black ghostshark
Classification: Holocephali Chimaeriformes Chimaeridae

Reference of the original description
Didier, D.A. (2008)
Two new species of the genus Hydrolagus Gill (Holocephali: Chimaeridae) from Australia. CSIRO Marine and Atmospheric Research Paper, 22, 349–356

Image of the original description

Lateral view of Hydrolagus homonycteris sp. nov.: drawing by Dana Stott Cohen; B. adult male paratype (CSIRO H 485, 942 mm TL, 567 mm BDL). In: DIDIER, D.A. (2008): Two new species of the genus Hydrolagus Gill (Holocephali: Chimaeridae) from Australia. CSIRO Marine and Atmospheric Research Paper, 22: 349-356

Types
Hydrolagus homonycteris
Holotype: CSIRO: H 2291-01; Paratype: CSIRO: H 485; CSIRO: H 2814-01; CSIRO: H 2290-01; CSIRO: H 2288-01; CSIRO: H 2287-01; NMNZ: P31202; NMNZ: P28796; NMNZ: P25964; NMNZ: P18079; NSMT: P 43481; NSMT: P 32227;


Description :


Citation: Hydrolagus homonycteris Didier, 2008: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 03/2024

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Lateral view of Hydrolagus homonycteris sp. nov.: adult male holotype (CSIRO H 2291–01, 1085 mm TL, 667 mm BDL), In: DIDIER, D.A. (2008): Two new species of the genus Hydrolagus Gill (Holocephali: Chimaeridae) from Australia. CSIRO Marine and Atmospheric Research Paper, 22: 349-356
Short Description
Original diagnosis after DIDIER, 2008 [3359]: A species of chimaeroid fish assigned to the genus Hydrolagus on the basis of a ventral caudal fin that that is not indented at its origin to form a separate anal fin. Hydrolagus homonycteris is distinguished from its congeners by the following combination of characters: body colour an even dark black or blackish-brown, dorsalfin spine longer than height of first dorsal fin, pelvic fins distinctly round in shape, and males with pelvic claspers that are dark at the base with pale tips, divided for the distal 1/3 of their length.

Distribution
Southern Ocean: Australia and New Zealand. Source: www.gbif.org

Size / Weight / Age
109 cm TL (male/unsexed; [3359])

Habitat
bathydemersal; marine; depth range 866 - 1447 m [3359]

Remarks
shark-references Species-ID=3078;