do you need a fishing license

You need a license whether your keeping or not

I don't think you need a license fishing from the shore in a county park. Check the county parks website to clarify for yourself before you take my word for it.

Texas requires fishing license regardless don't see anybody out there checking for it just keep in mind license you get today expires in August pics back up in September so whatever you spend is only going to be good for the months until August 31st

Yes

If you need.