Midgley's Carp Gudgeon, Hypseleotris bucephala Thacker, Geiger & Unmack 2022

Other Names: Boofhead Carp Gudgeon
A tan to dark brown carp gudgeon with alternating light and dark bands on the upper half of the body, a paler lower half with a silvery throat and belly, and clear to dusky fins. Breeding males have bright red, black and orange bands, often with a narrow white margin, on the outer half of the dorsal, caudal and anal fins. The species has a blunt head, a rounded snout profile, and predorsal scales.

Cite this page as:
Bray, D.J. 2022, Hypseleotris bucephala in Fishes of Australia, accessed 28 Sep 2022, https://fishesofaustralia.net.au/home/species/5650

Midgley's Carp Gudgeon, Hypseleotris bucephala Thacker, Geiger & Unmack 2022

More Info


Murray-Darling Basin, Bulloo-Bancannia Basin, the Lake Eyre Basin, East Coast drainages between the Tully and Brisbane rivers, and the upper Einasleigh River in the Gulf of Carpentaria, Queensland.
Hemiclonal lineages involving this species and Hypseleotris moolooboolaensis are present in the Mary, Maroochy, and Auburn (Burnett) rivers.


Dorsal fin VI-VIII(rarely VI) + I,10-12; Anal fin I,10-12; Pectoral fin 13-15; Longitudinal scales 30-35; Predorsal scales 0-19 (on midline); Vertebrae 29-30.
Scales present on dorsal head and nape, ranging from well-developed, imbricate to scattered, small, cycloid; head pores absent. Urogenital papillae in males and females blunt, with lateral edges of papilla longer than incised centre, yielding a w-shaped outline.


The specific name bucephala is from the Greek bu (= large), and kephale (= head) in reference to the blunt profile and enlarged forehead seen particularly in the males.

Species Citation

Hypseleotris bucephala Thacker, Geiger & Unmack 2022, Royal Society Open Science 9: 11, Fig. 6. Type locality: Lachlan River, below Cargellio Weir, New South Wales, Australia (PU16-08), 33.2012 S, 146.4523 E.


Bray, D.J. 2022


Atlas of Living Australia

Midgley's Carp Gudgeon, Hypseleotris bucephala Thacker, Geiger & Unmack 2022


Allen, G.R. 1989. Freshwater Fishes of Australia. Neptune, New Jersey : T.F.H. Publications 240 pp., 63 pls. (as Hypseleotris sp. A)

Allen, G.R., Midgley, S.H. & Allen, M. 2002. Field Guide to the Freshwater Fishes of Australia. Perth : Western Australian Museum 394 pp. (as Hypseleotris sp. 1)

Thacker, C.E., Geiger, D.L. & Unmack, P.J. 2022. Species delineation and systematics of a hemiclonal hybrid complex in Australian freshwaters (Gobiiformes: Gobioidei: Eleotridae: Hypseleotris). Royal Society Open Science 9: 220201. https://doi.org/10.1098/rsos.220201

Thacker, C.E., Shelley, J.J., McCraney, W.T. et al. 2022. Phylogeny, diversification, and biogeography of a hemiclonal hybrid system of native Australian freshwater fishes (Gobiiformes: Gobioidei: Eleotridae: Hypseleotris). BMC Ecology and Evolution 22. https://doi.org/10.1186/s12862-022-01981-3

Quick Facts

CAAB Code:37429049

Max Size:3 cm


Species Maps

CAAB distribution map