Snakehead Gudgeon, Giuris margaritacea (Valenciennes 1837)


Other Names: Mud Gudgeon, Snake-headed Gudgeon

Snakehead Gudgeon, Giuris margaritacea. Source: Hans Ho / NMMBA. License: All rights reserved

Summary:
Body generally greenish-brown, lower part of head tan or yellowish with 3-4 brownish red stripes radiating from lower part of eye; sides with 8-10 indistinct bars, and a large black blotch at the  pectoral-fin base.
Lives on muddy bottoms in rivers, swamps, coastal streams and floodplains, often amongst dense aquatic vegetation or underneath cut away banks.
Video of a Snakehead Gudgeon from Klademak Creek, in Sorong, West Papua, Indonesia.

Cite this page as:
Gomon, M.F. & Bray, D.J. 2017, Giuris margaritacea in Fishes of Australia, accessed 16 Nov 2018, http://fishesofaustralia.net.au/home/species/4151

Snakehead Gudgeon, Giuris margaritacea (Valenciennes 1837)

More Info


Distribution

Known in northern Australia from about Cape Tribulation to the Burdekin River, Queensland; also occurs elsewhere in the tropical western and central Pacific; benthic on mud bottoms, inhabiting rivers, swamps, coastal streams and floodplains, often amongst dense aquatic vegetation or underneath cut away banks.

Features

Dorsal fin VI + I, 8-9; Anal fin I, 9; Pectoral fin 14-16; Pelvic fin I, 5.
Relatively large, body stout, elongate and cylindrical; body depth 20-25% SL; head dorsoventrally flattened; mouth extends to below front part of eye.
Lateral line absent; mid-lateral scales 30-32; horizontal scale rows 8-9; side of head completely scaled.
Two separate dorsal fins; pectoral fins separate; caudal fin rounded.

Size

To around 23 cm SL.

Colour

Generally greenish-brown with 8-10 dark bars across sides and large black blotch at base of pectoral fins. Tan or yellowish on lower half of head with 3-4 brownish red stripes radiating from lower part of eye. Grey spots on caudal and dorsal fins.

Feeding

Omnivore - feeds mainly on aquatic insects and nymphs and smaller amounts of algae, other aquatic plants and small crustaceans.

Biology

Oviparous, benthic spawners. Females deposit approximately 100,000 to 220,000 small eggs. Likely to have a marine larval phase.

Species Citation

Eleotris margaritacea Valenciennes, 1837, Histoire Naturelle des Poissons 12: 240. Type locality: Vanikolo.

Author

Gomon, M.F. & Bray, D.J. 2017

Snakehead Gudgeon, Giuris margaritacea (Valenciennes 1837)

References


Allen, G.R. (1989). Freshwater Fishes of Australia.  Neptune, New Jersey : T.F.H. Publications 240 pp. pls 1–63 (as O. aporos)

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

Bauchot, M.-L., Desoutter, M., Hoese, D.F. & Larson, H.K. (1991). Catalogue critique des types de poissons du Muséum national d'Histoire naturelle (Suite) Sous-ordre des Gobioidei. Bull. Mus. Natl. Hist. Nat. Paris (4)13(section A, 1–2, supplement): 1–82

Cuvier, G.L. & Valenciennes, A. (1837). Histoire Naturelle des Poissons.  Paris : Levrault Vol. 12 507 pp. pls 344–368

Quick Facts


CAAB Code:37429010

Habitat:freshwater streams and swamps

Max Size:23 cm SL

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