Nera River (Danube Watershed) Fish Fauna Dynamic Over One Century

The ichthyofauna of the Nera River is shaped by the adaptation and evolution of fish fauna to the local highly variable relief of this river watershed. In the last half century, in some aspects, it was moderately influenced by the human activities’ impact over time in different degrees, but also by the sectors in a good ecological status, which can be considered as sanctuaries for important ecological and economic fish species. Also, climate change can be added as another driver. This research almost doubled the number of known fish species in this area.