Barramundi


Latin name: Lates calcarifer


Common name: Barra

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Farmed

Region:
NT, QLD, NSW, WA, VIC, SA

Key Facts

  • Barramundi is mainly farmed in land-based tanks and ponds, with smaller volumes produced in sea cages in the ocean.
  • The vast majority of barramundi produced in Australia is from farmed production rather than wild capture fisheries.
  • The amount of wild caught fish needed to produce fishmeal and oil for barramundi feed is approximately equal to or less than the amount of farmed fish produced. This means that the farms aren’t taking out more fish from the ocean than they produce.
  • Minimal environmental impacts from both land-based and sea cage production methods.
  • Minimal chance of disease transfer between farmed and wild populations of barramundi.

More information

  • QLD, NSW, VIC, NT, SA, WA (3,722t produced in Australia in 2014-15)

Barramundi are native to Australia, and are caught in wild fisheries and farmed. Farmed production exceeds wild fisheries production by over 2,500t. Farmed barramundi are mainly produced on land in tanks and ponds, with minor volumes produced in the ocean in sea cages in Western Australia.

As an omnivorous species, barramundi are dependent on the fishmeal and fish oil in feed sourced from wild caught fish. However, they can be farmed on a diet relatively low in fishmeal and oil, and feed manufacturers continue to produce feeds with lower quantities of wild caught fish. Farmed barramundi has a better ‘wild fish in to farmed fish out’ ratio than farmed carnivorous finfish species such as Rainbow trout and Atlantic salmon. The amount of wild caught fish needed to produce fishmeal and oil for barramundi feed is approximately equal to or less than the amount of farmed fish produced. This means that the farms aren’t taking out more fish from the ocean than they produce.

Farming barramundi also has a relatively low impact on the natural environment. Waste from land-based farms is adequately managed by the jurisdiction in which the farm is sited, and sea cage production in WA is situated in an area of high water movement, meaning waste is removed and adequately dispersed by water currents. In addition, wastewater from barramundi farms along the Qld coast is adequately treated and does not present a threat to the Great Barrier Reef. Careful planning of sea cages location and wastewater treatment is essential to ensure minimal environmental impacts.

Disease transfer from farmed to wild populations is not an issue in land-based production and minimal in sea cage operations.

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Wild Caught

Region:
NT, WA

Key Facts

  • There are no formal stock assessments for barramundi in NT or WA. The measures that both jurisdictions use to monitor stock health of barramundi, including assessment of long-term catch records, indicate that stocks are healthy.
  • The NT and WA fisheries interact with threatened species, such as dolphins, crocodiles and sawfish. Interactions are not thought to be resulting in population declines and area closures and marine parks should confer protection to endangered species.
  • Independent observer coverage is due to begin again in 2018 in the NT. It is non-existent in WA, a major concern offset by the small scale of the fishery.

More information

  • Northern Territory Barramundi Fishery (344t 2015)
  • WA Kimberley Gillnet and Barramundi Fishery (52t 2016)

There are no formal stock assessments for barramundi stocks in NT or WA. The NT monitors the stock health of barramundi by assessing long-term catch records and by tagging and releasing fish and recording the number that are re-caught in commercial fisheries. There are concerns about poor recruitment of young barramundi into the population due to poor weather; however, the annual harvest of the stock is less than 5% of the population.

Fisheries in WA focus on only a few of the multiple stocks of barramundi. Fishing effort is low and newly established marine parks provide protection for some stocks from commercial fishing in some parts of the fishery, notably Roebuck Bay where all commercial effort has been removed from what was a major source of catch. There are no major sustainability concerns.

Threatened species caught in the NT and WA fisheries include dolphins, crocodiles and sawfish. The NT fishing industry has developed a Code of Practice that details the best methods to release bycatch alive. Given the wide distribution of the protected species caught and the moderate interaction rates previously recorded by independent observers, there are no indications the fisheries are causing population declines of any protected species. There are extensive areas closed to gillnet fishing in NT waters and recently established marine parks in WA that are likely to confer a degree of protection to endangered species.

There has been previous independent observer coverage in NT, where the program is due to begin again in 2018. There is no observer coverage in WA, which is a concern offset by the small scale of the fishery.

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Wild Caught

Region:
QLD

Key Facts

  • Gillnets catching barramundi also catch significant numbers of protected and vulnerable wildlife as bycatch, including turtles, dugongs and hammerhead sharks.
  • Fisheries managers in QLD have reported discrepancies between protected species interactions reported in fishery logbooks and those recorded by independent observers. There is a high probability protected species bycatch is higher than reported in fishery logbooks.
  • The fishery observer program in QLD was cancelled in 2012, meaning there is no independent record of the impact of the fishery on threatened species. Observation of the fishery is considered essential to the management of a sustainable fishery.
  • There are no formal stock assessments of barramundi in QLD. Stocks appear healthy, although concerns remain about management arrangements to ensure healthy stocks and about poor recruitment of young fish into barramundi populations.
  • QLD fisheries are currently undergoing broad reforms that should improve this ranking in the future, provided that the reforms deliver the strong and effective management necessary to support sustainable fisheries.

More information

  • QLD East Coast Inshore Fin Fish Fishery and Gulf of Carpentaria Inshore Fin Fish Fishery (717t 2016)

Barramundi is caught mainly using gillnets in two Queensland-managed fisheries operating off the eastern and Gulf coasts.

This assessment is based on the current impact of fishing for barramundi in QLD-managed fisheries. A reform of QLD fisheries is currently underway in order to modernise the management framework, demonstrate sustainability, improve the profitability of the industry and meet community expectations. AMCS will review the sustainability of the fishery following the fishery reform process.

The health of barramundi populations has not been formally addressed using stock assessments in QLD. Fishing effort (how much fishing can take place) is managed by measures such as fishery closures at certain times and in certain areas.

The indicators the fishery uses to monitor stocks of barramundi suggest QLD’s stocks are healthy; for example recent fish catches are similar to those of long-term catch records. However, there are concerns about poor recruitment of young barramundi into the population, and that current management arrangements are insufficient to manage the seven distinct stocks of barramundi that occur in QLD waters. Net-free zones implemented in three areas along the east coast should afford some protection to the affected stocks.

In both fisheries a number of threatened species are caught as bycatch, including green, loggerhead, flatback and leatherback turtles, inshore dolphins, dugongs, sawfish and a number of shark species, including hammerhead sharks. Even low levels of snubfin and humpback dolphin deaths will have a significant impact on their populations in QLD, and it is highly likely that fishing activity is resulting in the decline of populations in some areas.

Fisheries managers in QLD have also reported inconsistencies between fisheries logbook records and information from independent observers, including differences between the number, rate and type of protected species interactions. There is a high probability that protected species bycatch is higher than reported.

Sectors of both fisheries also target some shark species, despite a lack of information on their stock status. There is limited information on much of the basic biology of many of the targeted species, e.g. their age at maturity, frequency of reproduction and number of young. This lack of knowledge is particularly concerning as shark species are generally long-lived, slow to mature and produce few young, making them highly vulnerable to population depletion as a result of fishing activity. Sharks are also apex predators that are essential to maintaining healthy marine food webs.

Independent fishery observer programs are an important method of verifying protected species interactions. Unfortunately the QLD Government closed the observer program for all QLD managed fisheries in 2012. In the intervening six years, there has been no independent on-vessel monitoring of the fishery’s impact, which is unacceptable for fisheries operating in the ecologically sensitive regions of the Great Barrier Reef and the Gulf of Carpentaria. In addition, for fisheries that interact with threatened species, there is no record of actual protected species interactions over time, the ecological impacts of the fishery cannot be measured or managed.

QLD fisheries are currently undergoing broad reforms that should improve this ranking in the future, provided that the reforms deliver the strong and effective management necessary to support sustainable fisheries.