in fact I dont fcuking know of any fish that's protected
The rarer fish in the UK are protected species such as the Vendace, Burbot and Powan. Sturgeon in UK waters are also protected by law, technically they are owned again by the reigning monarch.
Contrary to Shelley's opinion the water quality in most rivers in Engalnd and Wales is actually pretty good and many of the fish are good eating and perfectly safe to eat. Species such as Pike, perch, carp and zander are all good if prepared correctly. Just remember that there is a maximum of 2 fish to be removed a day.