White rock creek runs through Plano on the west side. I think Rowlett Creek does too but I'd have to check I believe its a creek that feeds into Rowlett Creek. It runs along behind Oak Point nature preserve. Take the walking trails at Oak point and you will see the creek, it has fish in it. Just watch for snakes. Lots of ponds in Plano to fish.
There are too, fish in the Sonic Pond!