The shoreline to the left of the rec center is a popular spot. I see lots of people fish there, and have even taken a few kids to catch small panfish. A few years ago they stocked rainbows in it, and I've seen some nice 13"-14" come out occasionally. It's a favorite bike path for my wife and I, but we haven't been there yet this year. Yesterday, I took a couple of kids up to Heart Lake and we caught some small panfish, but I did see a few nice rainbows come out, again about 14". Another small pond fun for kids in the city of Brampton is Loafer's Lake.
Loafers lake is on my bike trail, I've never seen anyone fishing there. I've never even seen fish in the lake to be honest, though the city claims it holds pike and largemouth bass. The creek leading into it usually has small suckers and chubs, but recently there's been something odd going on, alot of the chubs from the creek are dying off quickly.
Last I heard was that the bows from professors were all gone, but there are a few rogue pike, you see them lots in mid spring around the back of the lake.