West Australian dhufish belong to a ‘suite’ (group) of demersal (bottom-dwelling) species. The demersal stocks fished between Kalbarri and Augusta are called the West Coast Demersal Scalefish Resource (WCDSR).
The commercial sector and the recreational (including charter) sector target West Australian dhufish. The WCDSR is under a formal allocation, with 64% allocated to the commercial sector and 36% to the recreational (including charter) sector. We manage all sectors together to help ensure the long-term sustainability of fish stocks.
The recreational (including charter) sector is managed to a total catch limit by bag, boat and possession limits, limited entry and tags (charter) and limited open seasons for recreational fishers. In addition, when fishing from a powered boat a Recreational Boat Fishing licence is required.
In the commercial sector, the West Coast Demersal Scalefish (Interim) Managed Fishery (WCDSIMF) take the most dhufish. We manage this fishery by limiting entry, applying gear restrictions and allocating a total catch limit. Units of entitlement are allocated to permits in ‘hours’ of fishing time and are monitored through a vessel monitoring system. Other commercial fisheries take a smaller amount of dhufish.
Recovery Plan
Dhufish is one indicator species for the inshore demersal suite in the West Coast Bioregion, which means its stock status is used to indicate the status of all inshore demersal species in the bioregion.
To ensure there are stocks of these iconic fish for the future, a 20-year recovery plan for the WCDSR has been in place since 2010 after a period of overfishing in the early 2000s. Find out more about recovery on the West Coast Demersal Scalefish Resource webpage.
Monitoring, assessment, and research
Research on demersal species in the West Coast Bioregion focuses on monitoring the status of indicator species, such as WA dhufish, to ensure fishing pressure is not having a negative impact on stocks. For more information, see Fisheries Occasional Publication No. 85, 2011.
We assess the status of indicator species using a weight-of-evidence approach that considers all available information.
Catch and effort data from commercial and charter logbooks are reviewed annually, with Statewide surveys of recreational private boat-based fishers undertaken every two to three years since 2011/12. Estimates of total fishing mortality (retained catches + mortality of released fish) are compared against relevant recovery benchmarks for each sector.
Fish frames of indicator species are collected and used to determine age compositions of stocks in relevant management areas, from which estimates of fishing mortality and relative spawning biomass are calculated.
Links to the most up to date stock assessment information can be found on the West Coast Demersal Scalefish Resource webpage.