Acipenser ruthenus Linnaeus, 1758

Iftime, Alexandru & Oţel, Vasile, 2025, An annotated systematical checklist of the Romanian ichthyofauna, Zootaxa 5654 (1), pp. 1-64 : 7

Acipenser ruthenus Linnaeus, 1758

A native freshwater species. Formerly in the Danube and lower course of some of the main tributaries ( Bănărescu 1964; Cocan & MireȘan 2018). It maintains itself in the Danube down to the Delta arms (Oțel 2007; Strat & Gheorghe 2023) where it appears to have improved somewhat its population strength ( Năstase & Năvodaru 2023). Also found in tributaries MureȘ, SomeȘ, CriȘul Negru ( Nagy et al. 2023), Prut (Oțel 2007; Bulat et al., 2013; Bulat et al., 2016); reintroduced to CriȘul Repede but unclear whether it can reproduce there now ( Togor et al., 2022).