For all the northsiders I don't mind sharing a few spots as tilapia are filthy things.
The biggest ones I've ever caught are here, in a drain pond that runs out of the Boondall Entertainment Centre and into Cabbage Tree Creek. Access is tricky.
The biggest ones I've ever seen, and plenty of them, is here at Wavell Heights, on a drain that runs into Kedron Brook.
And the ones I've been targeting lately without success, basically because they're spooky as hell. Downfall creek at Chermside.