http://lmgtfy.com/?q=fish+of+professor%27s+lake+in+brampton
4th link reads the following
1660 North Park Drive
905-791-7751
Map ID: 55
Types of Fish: Black Crappie, Bluntnose Minnow, Carp, Koi, Largemouth Bass, Northern Pike, Sunfish, Rock Bass, Sucker, Yellow Perch, Jumbo Perch
Admission: FREE
Boat Rentals: Not available for fishing, shore fishing only
Season: Year-round, depending on the weather
Hours of Operation: No regulated hours, only for beach area