PORT PHILLIP BAY


Largenose Weedfish 

Heteroclinus nasutus (Günther, 1861)

View scientific description and taxonomy

Scientific Details

Meristics.
Dorsal fin spines/rays: III-IV, XXVII-XXXI, 3-4
Anal fin spines/rays: II, 18-23
Caudal fin rays: (segmented) 10-12
Pectoral fin rays: 12-13
Ventral fin spines/rays: I, 3
Lateral line: (arched) 20-26 + (straight) 20-27
Gill rakers: 2-4 + 6-8 = 8-11

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 meristics 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.
A Large and highly diverse group of modern bony fishes many of which have a generalized perch like body form. Most have pelvic fins with one spine and 5 rays and the maxillary bone is excluded from the gape of the mouth. Interrelationships of the group are poorly understood and continue to be studied. They inhabit almost all aquatic habitats from high-altitude strams to the deep sea, although most are marine.

Family level detail.
Mostly small well-camouflaged cryptic fishes with finger-like pelvic fins on the underside of the head and a long-based spinous dorsal fin joined to a short soft-rayed portion. The spinous part begins with several stiff spines, and the soft-rayed part contains up to 6 rays. Head often with orbital and nasal tentacles. They have internal fertilization and give birth to live young.

Taxonomy

Phylum:
Chordata
Subphylum:
Craniata
Superclass:
Gnathostomata
Class:
Actinopterygii
Order:
Perciformes
Family:
Clinidae
Genus:
Heteroclinus
Species:
nasutus

General Description

Body moderately deep; two dorsal fins connected at most near base, the first arising over middle of gill cover; jaws reaching to between middle and rear edge of eye; orbital tentacle long, thin; nasal tentacle large, multilobed. Males yellow to brown with a narrow brown bar extending below each eye, dorsal-fin tips white; females greenish brown with five thin, white bars extending onto dorsal and anal fins. To 9 cm.

Biology

Like many other fishes in the family Clinidae, this species has internal fertilisation and gives birth to live young.

Habitat

Amongst macroalgae on shallow rocky reefs in depths of 0-10 m.

Reefs

Distribution guide

South-eastern Australia, including central and eastern Victoria.

Species Group

Fishes Weedfishes and snakeblennies

Depth

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

Water Column

On or near sea floor

Max Size

9 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, Largenose Weedfish, Heteroclinus nasutus, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria, accessed 21 Sep 2017, http://portphillipmarinelife.net.au:8098/species/6402

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