AFTA has had confirmed by Qld Health:

If you are in a locked down area, you must stay home and only leave your home for an essential reason.

The current advice is that you should not go fishing unless you can demonstrate that it is absolutely necessary to obtain essential food and that you can do so within a 10km radius from your home.

Recreational boating is not permitted during lockdown.  

Qld Health highly recommended not to fish for food during the lockdown to minimise the risk of spreading COVID-19 at launch points.

Queensland Boating and Fisheries Patrol officers patrol waterways and fishing rules remain in place.

You can keep an eye out on the Queensland Health webpage for updates:

AFTA will continue to liaise with the Qld government on your behalf