czegledi.istvan [at]
+36 87 448 244/ 120
Brief description of the main scopes: 
  • Temporal and spatial organization of fish assemblages based on taxonomic and functional groups.
  • Studying the ecology of invasive fish species. Effects of invasive fishes on native communities.
  • Effects of human-induced habitat modification (e.g. urbanization, agricultural landuse) on fish assemblages.
  • Sampling of fish assemblages by different methods and the comparison of sampling techniques.
  • New technologies in fish sampling (eDNA).
Main profile in keywords: 
organization of fish assemblages, invasive species.
Selected publications:


Tibor Erős, Jesse R. O'Hanley,István Czeglédi (2018): A unified model for optimizing riverscape conservation Journal of Applied Ecology 55 (4), 1871-1883


Antal L., László B., Kotlík P., Mozsár A., Czeglédi I., Oldal M., Kemenesi G., Jakab F., Nagy S. A. (2016): Phylogenetic evidence for a new species of Barbus in the Danube River basin. Molecular Phylogenetics and Evolution
Czeglédi I., Sály P., Takács P., Dolezsai A., Nagy S. A., Erős T. (2016): The scales of variability of stream fish assemblages at tributary confluences. Aquatic sciences, 78(4), 641-654.



Czeglédi I., Erős T. (2013): Characterizing the long-term taxonomic and functional variability of a stream fish assemblage Fundamental and Applied Limnology 183/2