Call 519 623 9000
Here's their ad...
"Coldspring Trout Farm consists of three cold, fresh, spring water ponds nestled within a 100 acre nature preserve. Our ponds are filled with healthy rainbow trout that are as good to eat as they are fun to catch. We have a no-release, keep what you catch fishery. A fly fishing catch and release program with annual memberships is available.
You may bring your own fishing equipment or rent fully equipped rods from our pro shop as well as bait and accessories to help you land that big one! Located 5 minutes from Cambridge, one hour from Toronto - Hours: Thurs, Fri, Sat, Sun and holidays 8-8"