Salvelinus fontinalis (Mitchill, 1815)

Iftime, Alexandru & Oţel, Vasile, 2025, An annotated systematical checklist of the Romanian ichthyofauna, Zootaxa 5654 (1), pp. 1-64 : 20-21

Salvelinus fontinalis (Mitchill, 1815)

A non-native freshwater species, deliberately introduced and grown in aquaculture and stocked in montane rivers; Bănărescu (1964) suggests it does reproduce independently in rivers, and it is locally persistent over long periods ( Iftime & Iftime 2021 and sources quoted therein; Nagy et al. 2023; Drăgan et al. 2024).

ORD. ZEIFORMES

Fam. Zeidae

Zeus faber Linnaeus, 1758

A marine species, native to the Black Sea , but only rarely found in Romanian waters ( CărăuȘu 1952; Bănărescu 1964 [as both Z. faber and its synonym Z. pungio Cuvier, 1829 —see Fricke et al. 2025]; Vasil’eva 2007; Radu et al. 2008; Cocan & MireȘan 2018).

ORD. GADIFORMES

Fam. Gaidropsaridae

Gaidropsarus mediterraneus (Linnaeus, 1758)

A native marine species, found in the whole of the Romanian Black Sea waters ( Bănărescu 1964; Abaza et al. 2005; Oțel 2007; Radu et al. 2008; Maximov & Zaharia 2010; Țoțoiu et al. 2018; Cocan & MireȘan 2018; Niță et al. 2022).

Fam. Lotidae

Lota lota (Linnaeus, 1758)

A native, widespread freshwater species living in large, cold rivers (and rarely associated lakes), from the mouths of the Danube to the montane areas. Nowadays much restricted in range, it is still to be found in the Danube (and Delta), the upper MureȘ and upper Olt, the Tisza and Tur, the TimiȘ, and possibly the Putna and Bega ( Bănărescu 1964; Bănărescu 2005; Oțel 2007; Cocan & MireȘan 2018; Polyák et al. 2022; Nagy et al. 2023; Năstase & Năvodaru 2023); reintroduced to CriȘul Repede ( Togor et al. 2022).

Fam. Gadidae

Merlangius merlangus (Linnaeus, 1758)

A native marine species, found along all Romanian Black Sea waters ( Bănărescu 1964; Oțel 2007; Vasil’eva 2007; Maximov & Zaharia 2010; Yankova et al. 2014; Țoțoiu et al. 2018; Cocan & MireȘan 2018; Maximov et al. 2019; Niță et al. 2022).

ORD. OPHIDIIFORMES

Fam. Ophidiidae

Ophidion rochei Muller, 1845

A native marine species, formerly found along all Romanian Black Sea waters but nowadays restricted to the southern areas; quite rare ( Bănărescu 1964; Abaza et al. 2005; Oțel 2007; Vasil’eva 2007; Radu et al. 2008; Maximov & Zaharia 2010; Yankova et al. 2014; Țoțoiu et al. 2018; Cocan & MireȘan 2018; Niță et al. 2022).

ORD. GOBIIFORMES

Fam. Odontobutidae

Perccottus glenii Dybowsky, 1877

A non-native freshwater species (which can, however, occasionally adapt to brackish water), spread into Romania from introductions beyond the country, now freely reproducing and abundant in numerous drainages all over the country, including the Danube and Delta ( Iftime & Iftime 2021; Drăgan et al. 2024).

Fam. Oxudercidae

Knipowitschia caucasica (Berg, 1916)

A native euryhaline species, found in the Danube Delta , including the Razim lagoon complex, sporadically in Romanian Black Sea waters ( Danube Delta area, near Tăbăcărie-Constanța), the littoral lake TaȘaul, as well as along the Danube at Jijila lake and at Dervent ( Bănărescu 1964; Oțel 2007; Vasil’eva 2007; Yankova et al. 2014; Cocan & MireȘan 2018; Năstase et al. 2022; Năstase & Năvodaru 2023). Knipowitschia cameliae Nalbant et Oțel, 1995 is a synonym (Iftime & Oțel 2021).