“…In the same sense, bottleneck events were detected for both species in the three separate sites of the control basin that do not contain a reservoir. Owing to the damaging effects of dams, restoration programmes including dam removal have begun in different countries, which is very important for the restoration of the normal course of rivers, allowing the restoration of habitat connectivity (Bednarek, 2001;Hill, Trueman, Prévost, Arden, & Grant, 2019), free movement of fish (Kanehl & Lyons, 1997), and for improving their conservation status, (Eding, Crooijmans, Groenen, & Meuwissen, 2002); the results of this study predict important reductions in the genetic diversity of both species that would affect their persistence and conservation in the long term. Therefore, the construction of fish passes or the active translocation of individuals upstream and downstream could address the increasing differentiation of populations and the reduction of genetic diversity on both sides of the Corrales Dam.…”