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Southern Garfish (2018)

Hyporhamphus melanochir

  • Mike Steer (South Australian Research and Development Institute)
  • Corey Green (Victorian Fisheries Authority)
  • Jeremy Lyle (Institute for Marine and Antarctic Studies, University of Tasmania)
  • Kim Smith (Department of Primary Industries and Regional Development, Western Australia)

You are currently viewing a report filtered by jurisdiction. View the full report.

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Summary

Southern Garfish has a wide distribution around Australia. There are ten stocks across WA, SA, TAS and VIC. Five are sustainable, two depleting, two depleted and one recovering.

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Stock Status Overview

Stock status determination
Jurisdiction Stock Fisheries Stock status Indicators
Tasmania Tasmania SF Depleting Catch, effort, CPUE trends, age composition
SF
Scalefish Fishery (TAS)
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Stock Structure

Southern Garfish has a wide distribution in Australia, extending from Lancelin in Western Australia, along the southern coast of mainland Australia and up the east coast to Eden in southern New South Wales, as well as the surrounding waters of Tasmania [Gomon et al. 2008].

There has been no research into the stock structure of Western Australian populations of Southern Garfish. However, given the limited dispersal typically displayed by Southern Garfish, and the large spatial separation between the west and south coasts of Western Australia, it is highly likely that the west and south coast support separate biological stocks of this species [Steer et al. 2009, Ye et al. 2002].

In Victoria, there has been no research into the stock structure for populations of Southern Garfish and they are assumed to constitute a single jurisdictional stock.

In Tasmania, differences in size and age composition between the north coast and the east coast indicate that there may be multiple biological stocks; however, no firm evidence exists at present, and current stock assessments assume a single state-wide biological stock [Moore et al. 2018].

A multidisciplinary otolith-based study (otolith chemistry and morphometrics) identified at least five biological stocks in South Australia: West Coast, Northern Spencer Gulf, Southern Spencer Gulf, Northern Gulf St. Vincent and Southern Gulf St. Vincent [Steer et al. 2009]. Given the level of spatial separation of Southern Garfish observed between the gulfs, it was assumed that Southern Garfish from the south east also comprised a separate biological stock.

Here, assessment of stock status is presented at the biological stock level—Western Australia West Coast and Western Australia South Coast; South Australia West Coast (Western Australia); Southern Spencer Gulf, Northern Spencer Gulf, Southern Gulf St. Vincent, Northern Gulf St. Vincent and South East (South Australia); Tasmania; and at the jurisdictional level—Victoria.

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Stock Status

Tasmania

Between 1995 and 2005 commercial catches of Southern Garfish in Tasmanian waters were relatively stable and ranged between 80–100 t per annum. A sharp decline to 31 t in 2007 coincided with a reduction in average size and truncation of older age classes in the catch, which may have resulted from heavy fishing pressure and/or a period of poor recruitment. As a result, seasonal closures were introduced in 2009 to protect spawning fish. By 2012, there was evidence of an increase in the size of Southern Garfish landed, a greater range of age classes present and increasing catch per unit effort, which collectively was interpreted to indicate stock recovery over that period. Catches fluctuated between 40 and 60 t up until 2013 after which they again trended downwards, with 16 t taken in 2017, the lowest catch on record [Moore et al. 2018]. Catch rates for both dipnet and beach seine have also declined sharply over the past four years [Moore et al. 2018]. The above evidence indicates that the current level of fishing pressure is likely to cause the stock to become recruitment impaired.

On the basis of the evidence provided above, the Tasmania biological stock is classified as a depleting stock.

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Biology

Southern Garfish biology [Smith et al. 2017, Ye et al. 2002]

Biology
Species Longevity / Maximum Size Maturity (50 per cent)
Southern Garfish South Australia: 10 years, 380 mm TL Tasmania: 9.5 years, 460 mm TL. Western Australia: 12 years, 430 mm TL Western Australia: 12 months, 230 mm TL South Australia: 18 months, 190 mm TL Victoria: 19 months, 210 mm TL Tasmania: 22 months, 200 mm TL
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Distributions

Distribution of reported commercial catch of Southern Garfish
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Tables

Fishing methods
Tasmania
Commercial
Dip Net
Haul Seine
Unspecified
Recreational
Hook and Line
Dab Net
Beach Seine
Management methods
Method Tasmania
Commercial
Gear restrictions
Limited entry
Size limit
Spatial closures
Temporal closures
Recreational
Bag limits
Licence
Size limit
Active vessels
Tasmania
21 in SF
SF
Scalefish Fishery (TAS)
Catch
Tasmania
Commercial 16.35t in SF
Indigenous Unknown
Recreational 2 t (in 2012–13 survey)
SF
Scalefish Fishery (TAS)

Victoria – Indigenous (management methods) In Victoria, regulations for managing recreational fishing may not apply to fishing activities by Indigenous people. Victorian traditional owners may have rights under the Commonwealth's Native Title Act 1993 to hunt, fish, gather and conduct other cultural activities for their personal, domestic or non-commercial communal needs without the need to obtain a licence. Traditional Owners that have agreements under the Traditional Owner Settlement Act 2010 (Vic) may also be authorised to fish without the requirement to hold a recreational fishing licence. Outside of these arrangements, Indigenous Victorians can apply for permits under the Fisheries Act 1995 (Vic) that authorise fishing for specific Indigenous cultural ceremonies or events (for example, different catch and size limits or equipment). There were no Indigenous permits granted in 2017 and hence no Indigenous catch recorded.

South Australia – Commercial (catch) Data for the Northern Zone Rock Lobster Fishery (South Australia) and the Southern Zone Rock Lobster Fishery (South Australia) have been combined because of confidentiality requirements.

Tasmania – Recreational (management methods) In Tasmania, a recreational licence is required for fishers using dropline or longline gear, along with nets, such as gillnet or beach seine. e Tasmania – Indigenous (management methods) In Tasmania, Indigenous people engaged in fishing activities in marine waters are exempt from holding recreational fishing licences, but must comply with all other fisheries rules as if they were licensed. Additionally, recreational bag and possession limits also apply. If using pots, rings, set lines or gillnets, aborigines must obtain a unique identifying code (UIC). The policy document Recognition of Aboriginal Fishing Activities for issuing a Unique Identifying Code (UIC) to a person for Aboriginal Fishing activity explains the steps to take in making an application for a UIC

Western Australia – Recreational (catch) Current shore-based recreational catch and effort in Western Australia is unknown. State-wide surveys of boat-based fishing are conducted regularly, most recently in 2015/16 [Ryan et al. 2017].

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Catch Chart

Commercial catch of Southern Garfish - note confidential catch not shown

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References

  1.  Henry, GW and Lyle, JM 2003, The national recreational and indigenous fishing survey, Fisheries Research Development Corporation project 99/158, Australian Government Department of Agriculture, Fisheries and Forestry, Canberra.
  2. Conron S, Green C, Hamer, P, Giri K, and Hall K 2016, Corner Inlet- Nooramunga Fishery Assessment 2016. Fisheries Victoria Science Report Series No. 11.
  3. Giri K and Hall K, 2015 South Australian Recreational Fishing Survey. Fisheries Victoria Internal Report Series No. 62.
  4. Gomon, M, Bray, D and Kuiter, R 2008, Fishes of Australia’s southern coast, New Holland Publishers, Australia.
  5. Martell, S and Froese, R 2013, A simple method for estimating MSY from catch and resilience. Fish and Fisheries, 14: 504–514.
  6. Moore, BM, Lyle, J and Hartmann, K 2016, Tasmanian Scalefish Fshery Assessment 2016/17, The Institute of Marine and Antarctic Studies, University of Tasmania, Tasmania.
  7. Pearce, A, Lenenton, R, Jackson, G, Moore, J, Feng, M and Gaughan, D 2011, The “Marine Heat Wave” off Western Australia during the Summer of 2010/11, Fisheries Research Report 222, Department of Fisheries, Western Australia.
  8. Review of key Victorian fish stocks—2017 Victorian Fisheries Authority Science Report Series No. 1
  9. Ryan KL, Hall NG, Lai EK, Smallwood CB, Taylor SM and Wise BS 2017. Statewide survey of boatbased recreational fishing in Western Australia 2015/16. Fisheries Research Report No. 287, Department of Primary Industries and Regional Development, Western Australia. 205pp.
  10. Smith K, Dowling C, Mountford S, Hesp A, Howard A and Brown J. 2017, Status of southern garfish (Hyporhamphus melanochir) in Cockburn Sound, Western Australia. Research Report No. 271. Department of Fisheries, Western Australia.Smith K, Holtz M, Bunbury E, O'Malley J and Yerman M. 2018, West Coast Nearshore and Estuarine Finfish Resource Status Report 2017. In: Status reports of the fisheries and aquatic resources of Western Australia 2016/17: State of the Fisheries. eds. Gaughan DJ and Santoro K. Department of Primary Industries and Regional Development, Western Australia. pp 50–56.
  11. Smith K, Holtz M, Bunbury E, O'Malley J and Yerman M 2018, West Coast Nearshore and Estuarine Finfish Resource Status Report 2017. In: Status reports of the fisheries and aquatic resources of Western Australia 2016/17: State of the Fisheries. eds. Gaughan DJ and Santoro K. Department of Primary Industries and Regional Development, Western Australia. pp 50–56.
  12. Steer MA, Fowler AJ, McGarvey R, Feenstra J, Westlake EL, Matthews D, Drew M, Rogers PJ and Earl J 2018, Assessment of the South Australian Marine Scalefish Fishery in 2016. Report to PIRSA Fisheries and Aquaculture. South Australian Research and Development Institute (Aquatic Sciences), Adelaide. SARDI Publication No. F2017/000427-1. SARDI Research Report Series No. 974. Pp 250. 
  13. Steer, MA, Fowler, AJ and Gillanders, BM 2009, Spatial management of Garfish in South Australia – stock structure and adult movement, final report to the Fisheries Research and Development Corporation, project 2007/029, Canberra.
  14. Ye, Q, Jones, GK, McGlennon, D, Ayvazian, S and Coutin, P 2002, Fisheries Biology and Habitat Ecology of Southern Sea Garfish (Hyporhamphus melanochir) in Southern Australian Waters, final report to the Fisheries Research and Development Corporation, project 1997/133, Canberra.Conron S, Green C, Hamer, P, Giri K and Hall K 2016, Corner Inlet- Nooramunga Fishery Assessment 2016. Fisheries Victoria Science Report Series No. 11.