The main steps of the invasion process and the associated alien species status terminology used in this article.

 
 
  Part of: Drăgan O, Rozylowicz L, Ureche D, Falka I, Cogălniceanu D (2024) Invasive fish species in Romanian freshwater. A review of over 100 years of occurrence reports. NeoBiota 94: 15-30. https://doi.org/10.3897/neobiota.94.117313