This July 2015 video from the Guadalora river in Andalusia, Spain shows Tropidophoxinellus alburnoides (or: Squalius alburnoides) fish. This species lives a bit more to the north, in Extremadura, as well.
All these autochthonous species mentioned here are endemic to Spain and Portugal.
This video from Spain says about itself:
20 January 2015
Brown trout (Salmo trutta), Iberian barbel (Luciobarbus bocagei) and Iberian nase (Pseudochondrotoma polylepis) ascending the vertical-slot fishway model built in Hydraulics Laboratory (Centre for studies and experimentation on public works, CEDEX).
Fish species of Monfragüe, introduced from elsewhere, include carp.
And Prussian carp (introduced from, originally, Asia).
And big wels catfish.
And much smaller eastern mosquitofish.