Black Galaxias, Galaxias niger Andrews 1985


Holotype of the Black Galaxias, Galaxias niger. Source: Tasmanian Museum and Art Gallery. License: CC BY Attribution-Noncommercial-ShareAlike

Summary:
A very rare dark olive-brown galaxias with many large irregular dark brown blocks and bars along the sides, and translucent brown fins.

Cite this page as:
Martin F. Gomon, Galaxias niger in Fishes of Australia, accessed 29 May 2020, http://136.154.202.208/Home/species/3675

Black Galaxias, Galaxias niger Andrews 1985

More Info


Distribution

Known only from Reservoir Lakes, southern Tasmania; temperate. Adults inhabit deeper, shady areas of the Lake while juveniles shoal in the shallows around the edges.

Features

Meristic features: Dorsal fin 9; Anal fin 10; Pectoral fin 14-15; Pelvic fin 7.

Body stout, flattened anteriorly; head large and wide, flat to slightly concave between the orbits; snout blunt and rounded; jaws long, lower shorter than the upper; angle of jaws extending posteriorly to beneath middle of eye; two well developed pyloric caeca present; jaw teeth small, enlarged canine teeth absent; single row of about 8 teeth on the inner borders of each mesopterygoid, lingual teeth large; gill rakers thin and widely spaced.

Scales absent.

Paired and vertical fins small; pectorals almost circular; anal fin insertion beneath the first third of the dorsal base; caudal fin only slightly emarginate.

Size

To around 11 cm SL.

Colour

Uniform deep olive brown with numerous large irregular dark brown blocks and bars extending down sides. Fins dark translucent brown.

Biology

Lifecycle is completed in freshwater. Spawning likely to occur in late winter to early spring.

Etymology

Species is named niger from the Latin meaning black in reference to the heavy pigmentation.

Species Citation

Galaxias niger Andrews, 1985, Pap. Proc. R. Soc. Tasm. 119: 56, Pl 1. Type locality: Reservoir Lakes, southern Tasmania.

Author

Martin F. Gomon

Black Galaxias, Galaxias niger Andrews 1985

References


Andrews A.P. 1985 A new species of Galaxias (Pisces: Galaxiidae) from southern Tasmania. Pap. Proc. R. Soc. Tasm. 119: 55-60.

Paxton, J. R. , D. F. Hoese, G. R. Allen and J. E. Hanley 1989 Zoological Catalogue of Australia. Volume 7. Pisces. Petromyzontidae to Carangidae. Australian Government Publishing Service, Canberra. Zoological Catalogue of Australia. Volume 7. v. 7: i-xii + 1-665.

Paxton, J.R., G.R. Allen, J.E. Gates, D.J. Bray & D.F. Hoese 2006. Galaxiidae. pp. 402-411 in Beesley, P.L. & Wells, A. (eds). Zoological Catalogue of Australia. Volume 35 Australia : ABRS & CSIRO Publishing Parts 1-3, 2178 pp.

Quick Facts


CAAB Code:37102016

Habitat:Freshwater lakes

Max Size:11 cm SL

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