I've caught fish on Lewisville that seemed to be 2nd generation hybrids. The available evidence indicates that some small percentage of hybrids are fertile. Even though the majority are not, they still have the appropriate gonads and make the attempt.
"Decency is not news; it is buried in the obituaries --but it is a force stronger than crime" ~ Robert A. Heinlein, 1952
I can't give legal advice yet, but this site may have some of the answers you need: https://texaslawhelp.org/