2017 fishing licenses are now on sale in Colorado. Annual licenses will be good April 1st through March 30th of next year, with one-day fishing passes also available for purchase. Licenses can be purchased online through the Colorado Parks and Wildlife website or by calling 1-800-244-5613. Anglers between 18 and 64 will also have to purchase a $10 Habitat Stamp when they purchase their first fishing license of the year. Youth under 16 are allowed to fish free in Colorado. For more information on Colorado fishing regulations click here.