Longnose Weedfish, Heteroclinus tristis (Klunzinger 1872)


Other Names: Forster's Weedfish, Sharp-nose Weedfish

A Longnose Weedfish, Heteroclinus tristis, in Port Phillip Bay, Victoria. Source: Sarah Speight / Flickr. License: CC BY Attribution-Noncommercial-ShareAlike

Summary:

A large well-camouflaged weedfish with a long tapering snout and a very large mouth. The first dorsal fin arises on top of the head behind the eye and is not connected to the second dorsal fin. 

Longnose weedfishes usually live amongst algae on shallow sandy bottoms or nearby rocky reefs.


Cite this page as:

, 2011, Longnose Weedfish, Heteroclinus tristis, in Fishes of Australia, accessed 26 May 2016, http://www.fishesofaustralia.net.au/home/species/9

Longnose Weedfish, Heteroclinus tristis (Klunzinger 1872)

More Info


Distribution

Endemic to temperate waters of southern Australia, from Sydney, New South Wales, to theRecherche Archipelago, Western Australia, and througout Tasmania.

The Longnose Weedfish usually lives amongst algae on sandy bottoms and shallow rocky outcrops, in depths to 5 m.

Features

Meristic features
Dorsal fin spines/rays III, XXVIII-XXX, 3-5
Anal fin spines/rays II, 23-25
Caudal fin rays (segmented) 9-11
Pectoral fin rays 10-12
Ventral fin spines/rays I, 3
Lateral line (arched) 20-27 + (straight) 26-32
Gill rakers 2 + 7-10 = 9-12
Body compressed, snout very long, pointed; first dorsal fin tall, short-based, arising just behind the eye, followed by a separate long-based second dorsal fin; pelvic fins with a tiny spine and three rays; orbital tentacle long, slender, or with several small lateral lobes; nasal tentacle simple.

Males have a higher first dorsal fin than females.

Size

To 30 cm.

Colour

Variably yellowish, to reddish and brown, usually with complex markings including  dark spots, and a mosaic pattern of yellowish spots and bands; lower part of head and belly with large white spots, a dark bar from eye to end of jaws; fins with many small transparent patches, fin-tips sometimes yellow.

Feeding

Carnivores - feed on small fishes and invertebrates.

Biology

The sexes are separate and males have an intromittent organ for internal fertilisation. Australian weedfishes are ovoviviparous - meaning that the young develop inside eggs and hatch within the female before the well-developed larvae are born live.

Individual females usually carry multiple batches of eggs and/or embryos at the same time.

Fisheries

Of no interest to fisheries.

Conservation

  • EPBC Act 1999 : Not listed
  • IUCN Red List : Not listed
  • Species Citation

    Cristiceps tristis Klunzinger, C.B. 1872. Zur Fische-fauna von Süd Australien. Archiv für Naturgeschichte 38(1): 17-47 pl. 2 [31].
    Type locality: Murray River, SA.

    Longnose Weedfish, Heteroclinus tristis (Klunzinger 1872)

    References


    Cristiceps tristis Klunzinger, C.B. 1872. Zur Fische-fauna von Süd Australien. Archiv für Naturgeschichte 38(1): 17-47 pl. 2 [31] [as Cristiceps tristis]

    Castelnau, F.L. de 1872. Contribution to the ichthyology of Australia. 1. The Melbourne fish market. Proceedings of the Zoological and Acclimatisation Society of Victoria 1: 29-242 1 pl [131, as Cristiceps multifenestratus]

    Castelnau, F.L. de 1872. Contribution to the ichthyology of Australia. 1. The Melbourne fish market. Proceedings of the Zoological and Acclimatisation Society of Victoria 1: 29-242 1 pl [132, Cristiceps forsteri]

    Castelnau, F.L. de 1873. Contribution to the ichthyology of Australia. 3. Supplement to the fishes of Victoria. Proceedings of the Zoological and Acclimatisation Society of Victoria 2: 37-58 [48, as Cristiceps amaenus]

    Coleman, N. 1980. Australian Sea Fishes South of 30ºS. Lane Cove, NSW : Doubleday Australia Pty Ltd 309 pp. [256] (as H. forsteri)

    Edgar, G.J. 2008. Australian Marine Life: the plants and animals of temperate waters. Sydney : Reed New Holland 2, 624 pp. [559]

    Gunn, J.S. & Thresher, R.E. 1991. Viviparity and the reproductive ecology of clinid fishes (Clinidae) from temperate Australian waters. Environmental Biology of Fishes 31: 323-344

    Hoese, D.F., Gomon, M.F. & Rennis, D.S. 2008. Family Clinidae. pp. 696-722 in Gomon. M.F., Bray, D.J. & Kuiter, R.H (eds). Fishes of Australia's Southern Coast. Sydney : Reed New Holland 928 pp.

    Kuiter, R.H. 1993. Coastal Fishes of South-eastern Australia. Bathurst : Crawford House Press 437 pp. [332]

    Kuiter, R.H. 1996. Guide to sea fishes of Australia. A comprehensive reference for divers and fishermen. Sydney, NSW, Australia : New Holland Publishers xvii, 434 pp. [336]

    Last, P.R., Scott, E.O.G. & Talbot, F.H. 1983. Fishes of Tasmania. Hobart : Tasmanian Fisheries Development Authority 563 pp. figs [434] (as H. forsteri)

    McCulloch, A.R. 1915. Notes on and descriptions of Australian fishes. Proceedings of the Linnean Society of New South Wales 40(2): 259-277 pls 35-37 [275, pl. 37(3), as Petraites incertus]

    Rennis, D., Hoese, D.F. & Gomon, M.F. 1994. Family Clinidae. pp. 741-775, figs 650-684B in Gomon, M.F., Glover, C.J.M. & Kuiter, R.H (eds). The Fishes of Australia's South Coast. Adelaide : State Printer 992 pp. 810 figs [764]

    Quick Facts


    CAAB Code:37416009

    Biology:Live bearer

    Depth:1-5 m

    Habitat:Reef associated, sand, weed areas

    Max Size:30 cm TL

    Native:Endemic

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