CHECKLIST OF NON-INDIGENOUS FISH SPECIES OF THE RIVER DANUBE
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Twenty non-indigenous fish species were recorded in the Danube River. The manner of their introduction, vectors, pathways, well as invasive status are discussed. The major modes of introduction and translocation were found to be aquaculture and fish stocking. The main environmental consequences of the spread of alien fish are related to changes in the structure and functioning of the fish community and to the introduction of non-indigenous parasites.