Oncorhynchus mykiss (Walbaum, 1792)

Iftime, Alexandru & Oţel, Vasile, 2025, An annotated systematical checklist of the Romanian ichthyofauna, Zootaxa 5654 (1), pp. 1-64 : 19

Oncorhynchus mykiss (Walbaum, 1792)

A non-native freshwater/anadromous species, deliberately introduced and widely grown in aquaculture and stocked in montane rivers and lakes ( Iftime & Iftime 2021; Nagy et al. 2023; Drăgan et al. 2024). There is local evidence that it has established self-sustaining populations. In northern Romania a population has persisted for about 60 years without any additional stocking ( Ardelean & Beres 2000). Juveniles were also found in the upper Lotru River catchment (Southern Carpathians), without stocking (Lucan C. 2023) In recent years, adult specimens have been sporadically recorded in the Romanian waters of the Black Sea , probably escaped from aquaculture practiced by the countries bordering the Black Sea coasts (V. Oțel obs.). There are experiments to grow it in seawater in Romania as well ( Nenciu et al. 2022).