Western Galaxias, Galaxias occidentalis Ogilby 1899


Other Names: Western Jollytail, Western Minnow

Western Galaxias, Galaxias occidentalis. Source: Mark Allen. License: All rights reserved

Summary:

A large non-migratory galaxiid found in south-west Western Australia.

Identifying features:
Body long and slender;
Overall olive-green to tannish-brown on back and sides with a series of irregular darker bars on sides, belly silvery.


Cite this page as:
Martin F. Gomon & Dianne J. Bray, Galaxias occidentalis in Fishes of Australia, accessed 29 May 2020, http://136.154.202.208/Home/species/3676

Western Galaxias, Galaxias occidentalis Ogilby 1899

More Info


Distribution

Known only from Waychinicup Creek  east of Albany (118°50’E) to the Arrowsmith River, north of Perth (29°S) Western Australia; Inhabiting fast flowing water near rapids and waterfalls, slower moving streams and pools around submerged vegetation and woody debris; also lakes and wetlands; tolerates brackish conditions.

Features

Dorsal fin 10-12; Anal fin 12-18 (usually 14-16); Pectoral fin 10-15 (usually 13-14); Gill rakers 13-14.

Body elongate and slender; greatest depth 6.0-6.5 in SL; head flattened; snout moderately pointed; lateral canine teeth present in jaws and enlarged fangs at middle of lower jaw; lower jaw protruding slightly; caudal peduncle long. Scales absent. Caudal fin truncate or slightly emarginate.

Size

Maximum size to 19 cm, commonly to 9 cm TL.

Colour

Olive green to tan-brown overall with a series of darker bars on upper sides (sometimes pale and indistinct) with a silvery body, amber fins and golden eye.

Feeding

Feed mainly on insects and small crustaceans.

Biology

Spends entire lifecycle in freshwater.

Species Citation

Galaxias occidentalis Ogilby, 1899, Proc. Linn. Soc. N.S.W. 24(1): 157. Type locality: Perth, Western Australia.

Author

Martin F. Gomon & Dianne J. Bray

Western Galaxias, Galaxias occidentalis Ogilby 1899

References


Allen, G.R. 1989 Freshwater fishes of Australia. T.F.H. Publications, Inc., Neptune City, New Jersey.

Allen, G.R., H. Midgley & M. Allen 2002 Field guide to the freshwater fishes of Australia. I-xiv + 1-394.

Beatty SJ, Morgan DL. 2016. Rapid proliferation of an endemic galaxiid following eradication of an alien piscivore (Perca fluviatilis) from a reservoir. Journal of Fish Biology, 8 pp, doi:10.1111/jfb.13214

Merrick, J.R. & G.E. Schmida. 1984. Australian freshwater fishes: biology and management. Griffin Press Ltd., South Australia. 409 pp.

Morgan, D.L., Beatty, S.J., Klunzinger, M.W., Allen, M.G. & Burnham, Q.E. 2011. A Field Guide to Freshwater Fishes, Crayfishes & Mussels of South-Western Australia. Murdoch, Western Australia : SERCUL & Freshwater Fish Group & Fish Health Unit (Murdoch University) 80 pp.

Morgan, D.L., Gill, H.S. & Potter, I.C. 1998. Distribution, identification and biology of freshwater fishes in south-western Australia. Records of the Western Australian Museum, Supplement 56: 1-97.

Morgan, D.L., Unmack, P.J., Beatty, S.J., Ebner, B.C., Allen, M.G., Keleher, J.J., Donaldson, J.A. & Murphy, J. 2014. An overview of the ‘freshwater fishes’ of Western Australia. Journal of the Royal Society of Western Australia 97: 263–278

Ogilby, J.D. 1899. Contributions to Australian Ichthyology. Proc. Linn. Soc. N.S.W. 24(1): 154-186.

Pen, L.J. & Potter, I.C. 1991. Biology of the western minnow, Galaxias occidentalis Ogilby (Teleostei: Galaxiidae), in a south-western Australian river. 1. Reproductive biology. Hydrobiologia 211(2): 77-88.

Pen, L.J. & Potter, I.C. 1991. Biology of the western minnow, Galaxias occidentalis Ogilby (Teleostei: Galaxiidae), in a south-western Australian river. 2. Size and age composition, growth and diet. Hydrobiologia 211(2): 89-100.

Quick Facts


CAAB Code:37102017

Behaviour:Non-migratory

Habitat:Freshwater rivers, creeks, lakes, wetlands

Max Size:19 cm TL

Native:Endemic

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CAAB distribution map