Gladius Drummer, Kyphosus gladius Knudsen & Clements 2013

Other Names: Gladius Chub, Gladius Sea Chub

Gladius Drummer, Kyphosus gladius, at Busselton, Western Australia, June 2009. Source: Sascha Schultz / License: CC By Attribution-NonCommercial

A silvery to a metallic-blue drummer that is not countershaded (not darker above and lighter below), with a silvery line beneath the eye and a vertical green bar on the gill cover.

Cite this page as:
Bray, D.J. 2019, Kyphosus gladius in Fishes of Australia, accessed 14 Jul 2024,

Gladius Drummer, Kyphosus gladius Knudsen & Clements 2013

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Endemic to temperate waters of Western Australia, between the Houtman Abrolhos Islands and Albany.


Dorsal fin X-XI, 11-12; Anal fin III, 11-12; Gill rakers 3-5 + 11-15 = 15-19; Lateral line scales 55-64, pored scales 44-55; Longitudinal scales 49-57; Vertebrae 10 + 16 = 26. Body elliptical, compressed, elongate in lateral view; mouth terminal; anal fin base short 16.9-20.6% SL; caudal peduncle long, 18.7-26.5%SL (depth 9.9-11.8% SL); silvery line under eye, sixth dorsal fin spine length, 8.7-11.9 % SL; body depth, 33.3-41.6 % SL.


Silvery to bluish metallic; operculum with a vertical green bar running down rear of preoperculum; dorsal part of body without dark counter-shading.


The species is named gladius for its body shape, resembling the roman gladius sword (widest towards the point and tapers towards the hilt) with the relatively elongate body and shallow caudal peduncle, along with the metallic-bluish colouration.

Species Citation

Kyphosus gladius Knudsen & Clements, 2013, Zootaxa 3599(1): 4, Figs. 2-4. Type locality: Canal Rocks, Yallingup Reef, Western Australia [33°40' S, 114°59' E]. 


Bray, D.J. 2019


Atlas of Living Australia

Gladius Drummer, Kyphosus gladius Knudsen & Clements 2013


Allen, G.R. 1985. Fishes of Western Australia. Book 9. pp. 2207-2534 526 pls in Burgess, W.E. & Axelrod, H.R. (eds). Pacific Marine Fishes. Neptune, New Jersey : T.F.H. Publications. (as Kyphosus sydneyanus)

Hutchins, J.B. & Swainston, R. 1986. Sea Fishes of Southern Australia. Complete field guide for anglers and divers. Perth : Swainston Publishing 180 pp. (as Kyphosus sydneyanus)

Klunzinger, C.B. 1880. Die von Müller'sche Sammlung australischer Fische in Stuttgart. Sitzungsberichte der Akademie der Wissenschaften in Wien 80(1): 325-430 pls 1-9

Knudsen, S.W. & Clements, K.D. 2013. Kyphosus gladius, a new species of sea chub from Western Australia (Teleostei: Kyphosidae), with comments on Segutilum klunzingeri Whitley. Zootaxa 3599(1): 1-18. Abstract

Knudsen, S.W. & Clements, K.D. 2013. Revision of the fish family Kyphosidae (Teleostei: Perciformes). i 3751(1): 001-101.

Quick Facts

CAAB Code:37361025

Depth:0-15 m

Habitat:Reef associated

Max Size:52 cm SL


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