Squalius is a genus of fish in the family Cyprinidae, commonly known as chubs. This genus belongs to the subfamiliy Leuciscinae. The Eurasian daces, Leuciscus are close relatives. The present genus was formerly entirely included there and their delimitation with respect to each other is somewhat uncertain. A number of species have in recent times been moved from one genus to the other. Generally, Leuciscus in the modern sense is widespread across Eurasia, whereas Squalius is almost limited to Europe proper.