Go to square where the underground car park is in Tortosa and go to the local government office with the old doors and two big columns outside, second or third floor is the office where you can obtain fishing licences. You need to show your NIE or Residencia papers( depending who is on duty) plus your Passport which will have your date of birth on and anything else that proves you are retired and you will get a free licence to fish the Ebro up to Flix/ Riba roca and down to the sea. This has to be renewed every four years.Hope this helps.

                                         Old Nelson.