Fish in freshwater canning river

 Just a random question what fish are in the canning river? At the freshwater part and near the kent street weir? I saw this www.smh.com.au/environment/save-our-swan/giant-feral-goldfish-invade-was-river-systems-20131011-2vcwk.html and thought that I could catch fish this big there if I was lucky. I know there is carp and koi and chichlids in the freshwater part. And is there any redfin or trout in the system?

Lachie

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Fishing the swan for bream, it's just an obsession