 Was initially entitled "El Peix Cat", which is Catalan for catfish.  It was a reference to the catfish that the Germans imported, several  decades ago, in the center of Catalonia and unloaded into the Elber  River. Then they opened campsites so that they could come every year  and fish their catfish, organizing competitions. One of the purposes  of that title was to show how this invention of German tourism had  completely destroyed the aquatic flora in that region.