Need to know the Fishing Rules and Regulations in your state, click below;
QLD: https://www.qld.gov.au/recreation/activities/boating-fishing/rec-fishing
NSW: https://www.dpi.nsw.gov.au/fishing/recreational/fishing-rules-and-regs
VIC: https://vfa.vic.gov.au/recreational-fishing
TAS: https://dpipwe.tas.gov.au/sea-fishing-aquaculture/recreational-fishing
SA: https://pir.sa.gov.au/fishing
WA: http://www.fish.wa.gov.au/Fishing-and-Aquaculture/Recreational-Fishing/Pages/default.aspx