Tennessee’s 2021 Free Fishing Day will be held on Saturday, June 12.According to the Tennessee Wildlife Resources Agency, anyone can fish without a fishing license in public waters on Free Fishing Day.Children ages 15 and under can also fish without a license starting June 12 through Friday, June 18.a release from TWRA states. “The day allows anyone the opportunity to try this great outdoor sport to celebrate fishing as a wholesome and healthy recreational opportunity.”