Using release weights to protect demersals

UPDATE: As of 1 July, 2021, all boats across WA line fishing for demersal species must carry a release weight.

To give undersized or unwanted demersal fish experiencing barotrauma the best chance of survival a release weight should be used.

Having a release weight on board if fishing for demersals is compulsory under Department of Primary Industries and Regional Development fisheries rules, but using one to release undersized or unwanted fish is good stewardship of our fish stocks and will help the rate of recovery for the west coast fishery and help protect others.

Release weights are a simple, yet effective tool to release demersal fish.

Step-by-step guide to using a release weight:

  1. Gently remove the hook, which caught the fish, from its mouth;
  2. Insert the release weight’s barbless hook through the fish’s lip;
  3. With the line attached to the release weight, gently place the fish in the water and release the line, allowing the device to drag the fish towards the seabed;
  4. Once the fish is back at the depth it was caught, lightly tug the line to detach the release weight from the fish; and,
  5. Avoid any sudden jerks while the fish is descending, because it could dislodge the weight from the fish before it has safely reached the bottom.

Release weights – your questions answered

Q: Why should recfishers use a release weight?

A: With species such as dhufish, breaksea cod and red emperor susceptible to barotrauma, it is important recfishers do what is needed to enhance a demersal species’ survival post-release.

Release weights are easy-to-use and effective when returning a fish experiencing barotrauma back to the seabed.

Q: Have release weights’ effectiveness been tested?

A: Yes. A tagging study, led by the former Department of Fisheries, tested the successful release rates of demersal reef fish released by simple, vented and the release weight methods.

It found a release weight was the best method to release demersal species, after most of the recaptured fish that were tagged during the research had initially been released with the device.

Click here to read the “Maximising survival of released undersize west coast reef fish” study!

Q: Are boat fishers required to have a release weight?

A: According to WA fishing regulations, it is compulsory to possess a release weight when fishing for demersal fish, including dhufish, in WA.

Check out our release weight guide here!

Release weights help boost the post-release survival rate of demersals, including dhufish.

Continue Reading

July 29, 2026

Recfishwest Community Grants – bringing your fishing initiatives to life

Got an idea that could make fishing better in your local community? Applications are now open for Round 17 of Recfishwest’s Community Grants program. With applications closing at midnight on 16 September, community…

Read More

July 21, 2026

Rock wall ‘seeded’ with 20 tonnes of Byssal mussels in Cockburn Sound pilot project

As part of a new pilot project, 20 tonnes of Byssal grown mussels have been transferred onto a nearby Cockburn Sound rock wall to explore opportunities to extend the farm’s environmental impact. Working in partnership…

Read More

July 17, 2026

Recfishwest slams Stirling fishing ban as unfair blow to local families

Recfishwest has strongly criticised the City of Stirling’s decision to ban recreational fishing at 17 lakes, wetlands and reserves, warning the move unfairly punishes responsible fishers and will reduce…

Read More

July 15, 2026

ABC shines a spotlight on mussel power in Cockburn Sound

The new Byssal mussel farm initiative that Recfishwest has helped bring to life in Cockburn Sound recently featured on ABC News. The TV news feature gave viewers a great behind-the-scenes look at the initiative, which…

Read More

July 14, 2026

“King waves kill sign not just a tourist attraction” – Chris Dixon encourages fishers to stay safe along the Quobba Coast

Recfishwest Fish and Survive ambassador and avid rock fisher Chris Dixon is encouraging all fishers to have fun but stay safe when fishing along the Quobba Coast. Chris Dixon has caught many fantastic fish along the…

Read More

July 02, 2026

Everyone’s a grinner! First winner of our Grins and Fins kids photo competition announced

A cracking Samson fish and an even bigger smile have earned 12-year-old Hendrix Yates a winning place in Recfishwest’s inaugural Grins and Fins round. The Lesmurdie young gun landed the impressive Samson fish…

Read More