CSIRO Release 2019 Eastern Orange Roughy Spawning Biomass Report
An AOS survey completed in winter 2019 found that there were 42,600 tonnes of adult fish spawning on two hills in the eastern zone. Immature, non-spawning and southern fish were not surveyed and are additional to this. CSIRO FINAL REPORT AOS Eastern Zone 2019-compressed
Fishing industry providing shark samples for assessments
Four years ago, AFMA installed cameras on gillnet vessels targeting sharks in the south-east fishery to monitor dolphin and sea-lion interactions. However, a consequence of doing this was that human observers were removed from these vessels. These observers collected data on interactions with dolphins and seals but also collected lengths and vertebrae, which are used […]
What’s to become of Victoria’s Gippsland Lakes commercial fishery?
By Ross Winstanley* Not content with their exclusive fishing access to every Victorian estuary, recreational fishers are now pushing for the closure of commercial fishing in the Gippsland Lakes. From the 1960s through the 1980s, Victoria’s annual 800 tonne Gippsland Lakes commercial fishery produced 80% of Australia’s black bream landings, averaging about 250 tonnes. Today, […]
Danish Seine Fishermen Act to Protect Juvenile Flathead Stocks
The harvest strategy in the South-East aims to maintain tiger flathead stocks at a pre-determined % of the pre-fishing, or virgin, biomass. This is called the target reference point. The flathead stock has been above this target for many years so fishermen have enjoyed quotas (total allowable catches or TACs) designed to slightly reduce flathead […]
Eastern Orange Roughy 2016 Survey and Biomass Report
CSIRO have released the report on the biomass of orange roughy in the eastern zone. Read the executive summary and download the full report below. EXECUTIVE SUMMARY Based on the 2016 acoustic surveys the biomass of spawning orange roughy on the grounds at 38 kHz and 120 kHz ranges from 24 000 (CV 0.12) […]
Are There Several Blue-eye Stocks?
By Dr Alan Williams CSIRO Oceans and Atmosphere, Hobart Grilled with garlic, oven baked, or lightly pan fried with a hint of lemon, blue-eye trevalla is one of Australia’s premium fish, and an iconic fish species for commercial fishers and seafood lovers alike! Given its popularity, it’s then surprising to realise the extent of the […]
New Zealand Orange Roughy achieves MSC certification
SETFIA congratulates New Zealand on the Marine Stewardship Council (MSC) certification of three of its largest orange roughy fisheries, following a lengthy and rigorous assessment process. This achievement is a testament to the New Zealand seafood industry and the Department of Primary Industry’s heavy investment in rebuilding the orange roughy stocks over the last 20 […]
2016 Roughy Survey Shows Continued Recovery
Under contract to SETFIA, Tasmania’s CSIRO has completed another survey on two features known as St Patrick’s and St Helen’s off eastern Tasmania where roughy aggregate to spawn. St Helen’s Hill is typical of a roughy hill being a conical seamount rising from a depth of 1,100m to 600m. This is the 5th acoustic survey in […]
Why is the East Australian Current Behaving so Badly?
The East Australian Current (EAC) is a flow of water that is formed from the South Equatorial Current crossing the Coral Sea and reaching the eastern coast of Australia off Queensland. As the South Equatorial Current hits the Australian coast it divides forming the southward flow of the EAC. The EAC is the largest ocean current close to the shores of […]
Searching for school shark pups in South Australia
Matt McMillan is a PhD candidate working on school shark (Galeorhinus galeus) at the University of Adelaide. He needs your help to find school shark pupping grounds that may exist in South Australian waters. School shark numbers declined in the 1990s and conservative total allowable catches (TACs) have been set to help them recover. School […]