BUNDABERG MANGROVE JACK 2018

Mangrove Jack are an iconic sportfishing species, prized for their aggressive fighting ability.

  • Overview

    Overview

    Crystal Bowl GBR is aiming to examine 3 core measures across a wide range of species in the region:

    • Fishing experience (how many fish per trip)
    • Quality of the fish (size of fish)
    • Community attitudes (number of legal size fish kept or released)

     

    Fishing Experience

    • Qld Fisheries Boat Ramp Surveys reported a catch rate of 0.3 fish/fisher/day in 2017
    • Bundaberg ranked 6th in the state for Mangrove Jack Catch Rates in 2017
    • Not a target species for commercial catch

     

    Quality of the Fish

    • Most of the Mangrove Jack in Estuaries are Juvenile
    • The average length reported in Qld Fisheries Boat Ramp Surveys was 499mm
    • Bundaberg ranked 3rd in the State for average length but given the low sample size this is not a reliable measure

     

    Community Attitudes

    • 67% of legal size fish reported in 2017 were kept
    • 80% of fish reported in 2017 were caught by locals
    • Bundaberg ranked 13th in 2017 for the number of fish released

     

  • Assessment

    Limited Take For Consumption Advised

    Mangrove Jack are one of the most popular sports species around and Baffle Creek has long been a Mecca for Jack fishers.  Current data is too limited to provide an accurate picture of the fishery - more sports fishers contributing data would assist greatly in improving our understanding of the state of the fishery.

    Historically there have been big years reported in the region so the reputation is deserved.

    As this species is primarily a Sports Species, and given the high release rate amongst sport fishers, recommend maximum 1 fish taken in any one session.
  • Forecast

    Forecast

    Forecasting for Bundaberg will be completed and available for the 2018/19 financial year.

     

  • Sportfishers

    Mangrove Jack as a Sports Species

    Mangrove Jack are one of the most commonly targetted by Sportfishers in Bundaberg. They are a difficult species to target and represent a signficant challenge. Mangrove Jack are often found in similar habitat to Barramundi.

    • Local Sportfishers reported a catch rate of 2.3 fish/fisher/day in 2017 and have reported a rate of 1.38 fish/fisher/day in 2018, so far
    • The most common length reported in 2018 have been fish in the 451-500mm and 200-250mm size ranges
    • 58% of the total catch in 2018 have been undersize fish, with a 32% legal and 11% trophy fish reported

    A snapshot of local Sportfishers and Suntaggers catch data is available:

    Local Sportfishers / Suntaggers

     

  • Qld FIsheries Boat Ramp Surveys - General Fishers

    Monitoring of Recreational Catch by Qld Fisheries

    Queensland Fisheries monitors boat ramps up and down the coast as a part of the Sustainable Fisheries Strategy. General Fishers in Cairns regularly report catching Mangrove Jack each year. Monitoring began in 2017 and is ongoing in 2018.

    • 18 Mangrove Jack were reported in the 2017 Qld Fisheries Boat Ramp Surveys
    • A Catch Rate of 0.3 fish/fisher/day was reported in 2017
    • The average size reported in 2017 was 499mm
    • 67% of legal size fish reported in 2017 were kept
    • The peak period for catches in 2017 was during July

     

    Qld Fisheries Boat Ramp Surveys monitoring dashboard

     

  • Recruitment

    Monitoring of Mangrove Jack Recruitment

    While the lifecycle of the Mangrove Jack is understood, limited research has been conducted on environmental drivers for recruitment success.  Mangrove Jack recruits are detected during Bream Recruitment Surveys indicating they use similar habitat during their growth phase.

     

  • Monitoring

    Monitoring of Mangrove Jack

    Data for this assessment has been sourced from:

    • Bureau of Meterology
    • Local Sportfishers
    • Queensland Fisheries

     

    Here are links to all the monitoring pages for Mangrove Jack:

     

     

  • Fishing Area

    Area Assessed

    Mangrove Jack are caught in the estuary, creek and nearshore areas of the Bundaberg region. Recreationally they are targeted in inshore areas (map grids T31, T32, U31, U32 and V32).