Estuary Glassfish, Ambassis marianus Günther 1880

Other Names: Estuary Perchlet, Glass Perch, Mary Perchlet, Ramsay's Glassfish, Ramsay's Perchlet, Yellow Perchlet

Estuary Glassfish, Ambassis marianus. Source: Australian National Fish Collection, CSIRO. License: CC By Attribution-NonCommercial

A translucent silvery glassfish with dusky scale margins.

Cite this page as:
Bray, D.J. 2021, Ambassis marianus in Fishes of Australia, accessed 08 Dec 2022,

Estuary Glassfish, Ambassis marianus Günther 1880

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Endemic to eastern Australia from the Pioneer River, Queensland, to at least Eden, New South Wales. Inhabits estuaries, brackish lakes, mangrove-lined creeks and the lower reaches of freshwater streams. Individuals commonly aggregate among mangrove roots, log snags and aquatic vegetation.


Dorsal fin VII-VIII + 9-10; Anal fin III, 10-11; Vertebrae 24. 
Adults with 2-4 supraorbital spines, a short-based and deeply notched dorsal fin.


The specific name marianus is a combination of the type locality (Mary River) and the Latin -anus (= of, belonging to, pertaining to).

Species Citation

Ambassis marianus Günther, 1880. Rept Sci. Res. H.M.S. Challenger 1873–1876, Zoology 1(6): 32. Type locality: Mary River near Tiaro, Queensland.


Bray, D.J. 2021


Atlas of Living Australia

Estuary Glassfish, Ambassis marianus Günther 1880


Allen, G.R. 1996. Family Chandidae. pp. 146-149 in McDowall, R.M. (ed.) Freshwater Fishes of South-eastern Australia. Sydney : Reed Books 247 pp.

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

Allen, G.R. & Burgess, W.E. 1990. A review of the glass-fishes (Ambassidae) of Australia and New Guinea. Records of the Western Australian Museum, Supplement 34: 139-206.

De Vis, C.W. 1884. New Australian fishes in the Queensland Museum. Proceedings of the Linnean Society of New South Wales 1 9(2): 389-400 (described as Pseudambassis convexus)

Grant, E.M. 1975. Guide to Fishes. Brisbane : Queensland Government, Co-ordinator General’s Department 640 pp.

Grant, E.M. 2002. Guide to Fishes. Redcliffe : EM Grant Pty Ltd 880 pp.

Günther, A. 1880. Report on the shore fishes procured during the voyage of H.M.S Challenger, in the years 1872–1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger 1873–1876, Zoology 1(6): 1-82 pls 1-32

Jenkins, A., Kullander, F.F. & Tan, H.H. 2009. Ambassis marianus. The IUCN Red List of Threatened Species 2009: e.T169356A6610748. Downloaded on 09 September 2020.

Johnson, J.W. 1999. Annotated checklist of the fishes of Moreton Bay, Queensland, Australia. Memoirs of the Queensland Museum 43(2): 709-762.

Kuiter, R.H. 1993. Coastal Fishes of South-eastern Australia. Bathurst : Crawford House Press 437 pp.

Macleay, W.J. 1881. Descriptive catalogue of the fishes of Australia. Part 1. Proceedings of the Linnean Society of New South Wales 1 5(3): 302-444 (described as Pseudoambassis ramsayi)

Marsden, G.E. 1986. Fish larvae recruitment into Tuggerah Lakes. The University of New South Wales. BSc. thesis.

Miskiewicz, A.G. 1987. Taxonomy and ecology of fish larvae in Lake Macquarie and New South Wales coastal waters. University of New South Wales, Sydney. Ph.D. thesis.

Neira, F.J., Miskiewicz, A.G. & Trnski, T. 1998. Larvae of temperate Australian fishes: laboratory guide for larval fish identification. University of Western Australia Press. 474 pp.

Whitley, G.P. 1935. Fishes from Princess Charlotte Bay, North Queensland. Records of the South Australian Museum (Adelaide) 5(3): 345-365 figs 1-11 (p. 357, misidentified as Austrochanda macleayi)

Whitley, G.P. 1956. List of native freshwater fishes of Australia. Proceedings of the Royal Zoological Society of New South Wales 1954-55: 39-47.

Quick Facts

CAAB Code:37310018

Conservation:IUCN Least Concern

Habitat:Estuarine to freshwater

Max Size:10 cm SL


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