Squalius
Squalius is a genus of freshwater ray-finned fish belonging to the family Leuciscidae, the daces, Eurasian minnows and related fishes. The fishes in this genus are found in Europe and Asia. Hybridization is not rare in the Leuciscidae, including this genus. S. alburnoides is known to be of ancient hybrid origin, with the paternal lineage deriving from a prehistoric species related to Anaecypris; the latter mated with ancestral S. pyrenaicus. Present-day S. alburnoides mates with sympatric congeners of other species.
Species
These are the currently recognized species in this genus:Squalius adanaensis Turan, Kottelat & Doğan, 2013 Squalius agdamicus S. N. Kamensky, 1901Squalius alburnoides Squalius albus Squalius anatolicus Squalius aradensis Squalius aristotelis Özuluğ & Freyhof, 2011 Squalius berak Heckel, 1843 Squalius caetobrigus Mendes, Perea, Sousa, Sousa-Santos & Doadrio, 2024Squalius cappadocicus Özuluğ & Freyhof, 2011 Squalius carinus Özuluğ & Freyhof, 2011 Squalius carolitertii Squalius castellanus Doadrio, Perea & Alonso, 2007 Squalius cephalus Squalius cii Squalius fellowesii Squalius gaditanus Doadrio, Sousa-Santos & Perea, 2023Squalius illyricus Heckel & Kner, 1857 Squalius irideus Squalius keadicus Squalius kosswigi Squalius kottelati Turan, Yılmaz & Kaya, 2009 Squalius laietanus Doadrio, Kottelat & de Sostoa, 2007 Squalius latus Keyserling, 1861 Squalius lepidus Heckel, 1843 Squalius lucumonis Squalius malacitanus Doadrio & Carmona, 2006 Squalius microlepis Heckel, 1843 Squalius moreoticus Squalius namak Khaefi, Esmaeili, Sayyadzadeh, Geiger & Freyhof, 2016Squalius orientalis Squalius orpheus Kottelat & Economidis, 2006 Squalius palaciosi Squalius pamvoticus Squalius peloponensis Squalius platyceps Zupančič, Marić, Naseka & Bogutskaya, 2010Squalius prespensis Squalius pursakensis Squalius pyrenaicus Squalius recurvirostris Özuluğ & Freyhof, 2011 Squalius ruffoi Squalius semae Turan, Kottelat & Bayçelebi, 2017Squalius seyhanensis Turan, Kottelat & Doğan, 2013 Squalius spurius Heckel, 1843 Squalius squalus Squalius svallize Heckel & Kner, 1857 Squalius tartessicus Doadrio, Sousa-Santos & Perea, 2023Squalius tenellus Heckel, 1843 Squalius torgalensis Squalius turcicus De Filippi, 1865 Squalius valentinus Doadrio & Carmona, 2006 Squalius vardarensis S. L. Karaman, 1928 Squalius verepi Turan, 2022Squalius zrmanjae S. L. Karaman, 1928