The many interconnecting lakes and waterways of Quetico Park feature a large variety of fish. During spring, lake trout are plentiful. In summer, small mouth bass and walleye are common catches.

Fishing licences are available at all ranger stations in Quetico Park. They are required for fishing and must be in your possession when fishing. The catch and release method of fishing is most successful when barbs are removed or crushed and fish handling is kept to a careful minimum.

Live bait fish will upset the natural ecosystem of a lake and are, therefore, not allowed. This includes live cray-fish. Possession of smelt while angling is prohibited. Leeches may be used but must be purchased in Canada and cannot be imported from the USA.