Snapper and pearl perch are depleted in Queensland and further reduction in fishing pressure is needed to rebuild stocks back to target levels. The Queensland Government announced actions to improve stocks on 1 Sep 2019 , which followed the announcement that they would also introduce Fishing Aggregation Devices (FADs). Given previous regulatory approaches have been unsuccessful in improving stocks of both species, it is proposed that regulatory changes, complemented by the implementation of action mapping and social marketing, may be more effective.

Social marketing delivers innovative solutions that people value and that support desired outcomes. It draws on behavioural science and a psychology-based understanding of how and why people behave, what motivates them to change and what prevents behaviour change. Work in Australia has documented the use of behavioural incentives to encourage voluntary compliance of recreational fishers as well as testing social norms as a tool to encourage compliance within an experimental recreational fishery setting. This work sets a foundation to apply the approach to Queensland recreational fishing.

The Queensland Government’s announcement that it will invest $1 million in FADs offers an opportunity to change recreational harvesting behaviour. FADs can attract pelagic species increasing the diversity of fish species recreational anglers can target and therefore could shift fishing effort away from more vulnerable demersal species (e.g. snapper and pearl perch).

This project will use a social marketing approach that initially focuses on understanding if and how recreational fishers can be motivated and moved to use FADs as a strategy to reduce snapper and pearl perch fishing. This project will also consider a full range of strategies and behaviours and their relative potential to help reduce snapper and pearl perch recreational harvests.

A key challenge in addressing the issue is the numerous and diverse stakeholders with an interest in recreational fishing – many with conflicting agendas. Approaches that engage a broad cross-section of stakeholders together can identify priorities for action and generate solutions to achieve the outcomes sought.

This project addresses the national research priority "Ensuring that Australian fishing and aquaculture products are sustainable and acknowledged to be so", identified by FRDC as part of their RD&E Plan for the period 2015-2020. Further, this project addresses a research priority listed in FRDC's April 2018 Competitive round call for Expressions of Interest "To gain a better understanding of the spawning aggregations and dynamics of pearl perch". This project also addresses a Fisheries Queensland’s priority identified in their 2017 Monitoring and Research Plan "Research into lifecycle characteristics of pearl perch".

Outputs from a recent stock assessment suggested that the pearl perch stock, which extends southwards into New South Wales waters, is transitional depleted and stock recovery is necessary. This requires an improvement in egg production achievable through the protection of spawning animals. Knowledge of the pearl perch’s spawning dynamics would enable fishery managers to make evidence-based decisions regarding the harvest strategies that increase egg production and, therefore, build the stock biomass. For example, should patterns of pearl perch spawning aggregations be located, like those of the confamilial West Australian dhufish (belonging to the same taxonomic fish family), spatial closures could be employed to protect these aggregations. Similarly, temporal closures are currently used to avoid excessive fishing mortality on coral trout spawning aggregations and similar protection for pearl perch may be appropriate if spawning is timed to coincide with certain biological or seasonal cues. A thorough understanding of these spawning dynamics of the pearl perch is necessary to inform management of the species.

There is a need, therefore, to: (1) collect relevant biological information pertaining to the spawning dynamics of pearl perch, (2) supplement current information with fishery-independent data to better define temporal and spatial spawning patterns over the entire extent of the species’ distribution, and (3) identify areas likely to support spawning aggregations, if any, and to assess the movement to and from these spawning aggregations.