Review of allochthonous fish species with the marine origin in Serbian freshwater system

Abstract

During the last decades in the freshwater system in Serbia 27 allochthonous fish species appeared, and they can be divided into two groups. In the first group are representatives of fish fauna which are originally from Asia and they are intentionally introduced into open waters and aquaculture in Serbia, while the second group represent the migrants spreading their range from the Black Sea into freshwater systems. Some of these species already have established populations. Representatives of marine fauna that inhabit fresh-water systems in Serbia are: Syngnathus abaster, Neogobius fluviatilis, Babka gymnotra-chelus, Ponticola kessleri, Neogobius melanostomus, Proterorhinus (marmoratus) semi-lunaris, Gasterosteus aculeatus, Knipowitschia caucasica, Morone morone x Morone saxatilis. Gobiids extended their geographical distribution outside their native range and expanded their area of distribution in throughout whole Danube River Basin, while for the other specimens there are no literature data about established populations.