Hi cupcake(god,that sounds like a chat up line!)
I am not sure about Murcia but in this area(CB) they have fantastic lakes and rivers to fish from.
I am not a fisherman myself but i have a friend who goes every week.
The Segura river is particulary good and the lakes at Hondon are great for trout.
This info is based on the fact that my friend comes back every week bragging about what he caught, the size of it(fish) and obviously the one's that got away.
I am sure the Murcia region will have the same to offer.
Regards
Georgia