There are no hour limitations on fishing in general, so you may fish all night. Check fishing proclamations and salmon season booklets for any specific regulations that may apply. The best times to go fishing vary depending on what you're looking for. If you're after northerns, go during the day when they're most active. At night the cooler temperatures of the water allow it to be more productive when stocked with trout. The best time to go fishing for rainbow trout is in the morning before it gets too hot outside. They'll be more active then and easier to catch. Night fishing is a great way to spend an evening with your family and friends, especially if you have a campfire going. Just make sure you bring some flashlights with fresh batteries since there will be no electricity at night. Idaho has some of the finest fishing in the world, but only if you know where to go. The best places to find fish include Lake Coeur d'Alene, Priest Lake, Bear Paw Reservoir, and Malheur Lake. If you're a fan of mountain lakes, check out Clearwater or Castle Lakes in Custer County or Swan Lake in Gem County. There are also plenty of rivers in Idaho for those who like their fishing adventures big enough to drive home from work each day!