Are you sure about that. The city code handbook says otherwise.
This was updated Jan 2017.
Sec. 25-1.8. - Fishing.
Recreational fishing is permitted with valid fishing license.
No person shall engage in the business of catching or taking fish or game from parks controlled by the City of Irving for the purpose of sale. It shall be an affirmative defense to prosecution under this section that a person was authorized by contract with the city to catch or take fish or game under the supervision of the director of parks and recreation when such person is licensed by the Texas Parks and Wildlife Department to remove fish or game.
It shall be unlawful for any person to seine for minnows or use a seine for any purpose within the water controlled by the City of Irving.
(Ord. No. 5621, § 3, 5-11-89; Ord. No. 8405, § 1, 11-4-04) https://www.municode.com/library/TX/irvi...IINGE_S25-1.8FI