Tex. Parks and Wildlife Code § 76.1031

(a) All licenses issued under the authority of Chapter 76 of this code are valid only during the yearly period for which they are issued without regard to the date on which the licenses are acquired. Each yearly period begins on September 1 or another date set by the commission and extends through August 31 of the next year or another date set by the commission. The commission by rule may set the amount of a license fee for a license issued during a transition period at an amount lower than prescribed in this chapter and provide for a license term for a transition period that is shorter or longer than a year.

(b) All licenses issued under the authority of this chapter may not be transferred to another person or vessel except as provided by this subsection. A license issued under the authority of Section 76.101(c) may be transferred to another vessel or to a new owner of the same vessel. The commission, by regulation, may prescribe requirements necessary to clarify license transfer procedures and may prescribe, by regulation, forms to be used and fees to be charged for transfer of licenses in this chapter and for duplicate license plates or duplicate or replacement licenses.