Phoxinus marsilii Heckel, 1836

Iftime, Alexandru & Oţel, Vasile, 2025, An annotated systematical checklist of the Romanian ichthyofauna, Zootaxa 5654 (1), pp. 1-64 : 18

Phoxinus marsilii Heckel, 1836

A native, widespread freshwater rheophilic species, found in many rivers (and some associated lakes) in the hill and montane areas, in both intra- and extra-Carpathian drainages ( Bănărescu 1964; Cocan & MireȘan 2018; Nagy et al. 2023 — all as Phoxinus phoxinus (Linnaeus, 1758)) ; isolated populations in the Romanian Plain ( Nalbant 1976; Bănărescu & Nalbant 1980 —as P. phoxinus ).

Romanian Phoxinus populations were previously attributed to P. phoxinus ; subsequent splitting has shown that (despite few Romanian material being available for molecular analysis) most Romanian populations probably belong to P. marsilii , which is certainly spread in Romanian Transylvania, as well as in nearby Hungary, Ukraine and Moldova ( Palandačić et al. 2020, Denys et al. 2020).

ORD. SILURIFORMES

Fam. Siluridae

Silurus glanis Linnaeus, 1758

A native, widespread freshwater species, living in stagnant or slow-flowing water, in plain or hill areas, in both intra- and extra-Carpathian drainages, in and along the Danube and its major tributaries, the Danube Delta and some littoral lakes/lagoons ( Bănărescu 1964; Oțel 2007; Cocan & MireȘan 2018; Năstase et al. 2022; Nagy et al. 2023).

Fam. Ictaluridae

Ameiurus melas (Rafinesque, 1820)

A non-native freshwater species, spreading from introductions beyond the country, with freely reproducing, self-sustaining and expanding populations, and found in several catchments, both intra- and extra-Carpathian ( Iftime & Iftime 2021; Nagy et al. 2023; Drăgan et al. 2024).