PORT PHILLIP BAY


Smallscale Hardyhead 

Atherinason hepsetoides (Richardson, 1843)

View scientific description and taxonomy

Scientific Details

Meristics.
Dorsal fin spines/rays: V-X; I, 9-13
Anal fin spines/rays: I, 11-14
Caudal fin rays: 17
Pectoral fin rays: 13-16
Ventral fin spines/rays: I, 5
Gill rakers: (lower limb) 16-20
Vertebrae: 43-48

Interpreting fin count meristics.
Spines are in Roman numerals and soft rays are in Arabic numerals. Spines and rays that are continuous in one fin are separated by a comma. Fin sections are separated by semicolons.

Detailed descriptions of fin count and other mersitics are in:
Gomon. M.F., Bray, D.J. & Kuiter, R.H. (eds) (2008) Fishes of Australia's Southern Coast. Sydney : Reed New Holland 928 pp.

Order level detail.
Small, slender fishes with a terminal mouth, two separate dorsal fins, medium to large eyes and cycloid scales; pelvic fins usually abdominal, pectoral fins may be high on the body.

Family level detail.
Hardyheads are small, slender silvery fishes found worldwide in tropical and temperate coastal waters including estuaries. Some species live in freshwater. They have two widely separated dorsal fins, pectoral fins high on the body, a forked tail, cycloid scales and a broad silvery stripe along the side.

Taxonomy

Phylum:
Chordata
Subphylum:
Craniata
Superclass:
Gnathostomata
Class:
Actinopterygii
Order:
Atheriniformes
Family:
Atherinidae
Genus:
Atherinason
Species:
hepsetoides

General Description

Body long, slender, tail base slender; mouth large, very protrusible; jaws reaching beyond front of eye, jaw teeth minute or absent; pelvic fin tips extend beyond anus. Translucent, silvery yellow or green, midlateral stripe broad, silvery, dark or reddish, snout and top of head with fine dark speckles. To 12 cm.

Biology

This species commonly moves to deeper water during the day, returning at night to feed in the shallows.

Distribution guide

South-eastern Australia.

Species Group

Fishes Hardyheads

Depth

Shore (0-1 m)
Shallow (1-30 m)

Water Column

Midwater

Max Size

12 cm

Commercial Species

No

Global Dispersal

Native to Australia

Conservation Status

  • DSE Advisory List : Not listed
  • EPBC Act 1999 : Not listed
  • IUCN Red List : Not listed

Author

article author Bray, D.J.

Di Bray is a Senior Collection Manager of ichthyology at Museum Victoria.

Author

article author Gomon, M.F.

Dr. Martin Gomon is a Senior Curator of ichthyology at Museum Victoria.

citation

Cite this page as:
Bray, D.J. & Gomon, M.F., 2011, Smallscale Hardyhead, Atherinason hepsetoides, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria, accessed 18 Nov 2017, http://portphillipmarinelife.net.au:8098/species/6280

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