Natura 2000 A Panacea? Natura 2000 Site Oltul Mijlociucibin-Hârtibaciu (ROSCI0132) ‒ a Local Extinction of a Native Fish Species and a New Alien Fish Arrival Case Study

Abstract The Romanian Oltul Mijlociu-Cibin-Hârtibaciu Natura 2000 site of community importance (SCI) was designated for the purpose protecting biodiversity and maintaining wild flora fauna in a favourable conservation status, as well natural habitats interest. This research focused on possible disparition one protected fish species Pelecus cultratus (Linnaeus, 1758) appearance an alien Babka gymnotrachelus (Kessler, 1857), ecological indicators fact that at least this is far from being properly new, more responsible way should be followed different administrators put charge areas management.