No Chub, they are an entirely different animal, go with your usual approach and you will be lucky to catch one, got to dash out now so dont have time for more detail sorry.
Been 8 or 9 times this past few years Black Sheep, why pay a guide a few hundred quid when all the fun is working it out for yourself.
Fly fishing for barbel is popular in some parts but in the main most spaniards lure fish like the Yanks for Black Bass. Carp fishing is growing in popularity though. Miles and miles of unfished river and you can wander where you like in the main as all Spanish rivers are state owned.