Zones
Ontario's 20 fishing zones, with seasons, limits, and what is open right now. Not an official source, so check the official summary before you fish.
on-fishing turns Ontario's fishing regulations into a map. Ontario publishes the rules each year as a 148 page PDF, and reading it on your phone at the boat launch is not it. Tap your zone and the seasons, the catch limits, and what is open today are right there.
It draws all 20 fisheries management zones live from the government's official boundary service, so the shapes are always current. Find your zone by GPS or by tapping the map, search a lake to see its zone and stocking history, and compare a species across the whole province. Every zone lists the waters that carry their own special rules.
It is not an official source. Seasons are reliable, but some limits and lake exceptions are pulled from a dense PDF and can be rough, so always confirm against the official summary before you fish. Nothing is tracked. The regulations are built into the page and it works offline once loaded.