Bythaelurus giddingsi

Mccosker, Long & Baldwin, 2012

Galápagos Catshark
Classification: Elasmobranchii Carcharhiniformes Pentanchidae

Reference of the original description
McCosker, J.E. & Long, D.J. & Baldwin, C.C. (2012)
Description of a New Species of Deepwater Catshark, Bythaelurus giddingsi sp. nov., from the Galápagos Islands (Chondrichthyes: Carcharhiniformes: Scyliorhinidae). Zootaxa, 3221, 48–59

Image of the original description

Bythaelurus giddingsi McCosker, Long & Baldwin, 2012; Underwater photograph of a living Bythaelurus giddingsi taken from the Johnson Sea-Link submersible at a seamount SE of San Cristobal Island, Galápagos, at 461 m depth on 5 November 1995 © California Academy of Sciences

Bythaelurus giddingsi
Holotype: CAS: 210091; Paratype: CAS: 210093; CAS: 86559; MNHN: 2010-0004; SAM: 35042; SIO: 99-99; USNM: 364283;

Description :

Citation: Bythaelurus giddingsi Mccosker, Long & Baldwin, 2012: In: Database of modern sharks, rays and chimaeras,, World Wide Web electronic publication, Version 07/2024

Please send your images of "Bythaelurus giddingsi" to

Holotype of Bythaelurus giddingsi sp. nov, CAS 210091, 402 mm TL. Illustration by Alison E. Schroeer © California Academy of Sciences
Common names
eng Galápagos Catshark

Short Description
A moderate-sized species of Bythaelurus with the following characteristics: snout bluntly rounded; preoral length 4.7–6.8% TL; head short, its length about equal to pectoral-pelvic space, 21–24% TL; precaudal length 73–80% TL; dorsal and anal fins subequal; length of anal-fin base about equal to length of interdorsal space; precaudal vertebrae 81–85 (mean = 82.6); color chocolate brown dorsally, paler on ventral surface from snout to anus; body, flanks, caudal and median fins overlain with pale spots about equal in size to eye, becoming smaller below lateral midline, and showing a bilaterally asymmetrical pattern.

All known specimens are from the Galápagos Islands


Size / Weight / Age
max male: 291 mm TL; max female: 355 mm TL (types)

marine; depth range 428–562 m depth

shark-references Species-ID=12005;