{{Speciesbox | image = Squalius cephalus Prague Vltava 2.jpg | status = LC | status_system = IUCN3.1 | status_ref = | taxon = Squalius cephalus | display_parents = 3 | authority = (Linnaeus, 1758) | synonyms = *Cyprinus cephalus Linnaeus, 1758 Leuciscus cephalus (Linnaeus, 1758) Cyprinus capito Scopoli, 1786 Cyprinus chub Bonnaterre, 1788 Cyprinus lugdunensis Walbaum, 1792 Cyprinus orthonotus Hermann, 1804 Cyprinus albula Nardo, 1827 Leuciscus cabeda Risso, 1827 Cyprinus kietaibeli Reisinger, 1830 Cyprinus rufus Vallot, 1837 Leuciscus albus Bonaparte, 1838 Leuciscus cavedanus Bonaparte, 1838 Leuciscus brutius Costa, 1838 Leuciscus orientalis Nordmann, 1840 Squalius orientalis (Nordmann, 1840) Leuciscus rissoi Schinz, 1840 Squalius pareti Bonaparte, 1841 Squalius tyberinus Bonaparte, 1841 Leuciscus nothulus Bonaparte, 1841 Squalius cephalopsis Heckel, 1843 Leuciscus albiensis Valenciennes, 1844 Leuciscus frigidus Valenciennes, 1844Leuciscus squalius Valenciennes, 1844 Squalius meunier Heckel, 1852 Cyprinus salmoneus Gronow, 1854 Leuciscus latifrons Nilsson, 1855 Squalius meridionalis Blanchard, 1866 Squalius clathratus Blanchard, 1866 Leuciscus ruffoi Bianco & Recchia, 1983Leuciscus lapacinus Stefani, Serra, Loffredo & Fossa, 1987 }}Squalius cephalus is a European species of freshwater fish in the carp family Cyprinidae. It frequents both slow and moderate rivers, as well as canals and still waters of various kinds. This species is referred to as the common chub, European chub, or simply chub. Description It is a stocky fish with a large rounded head. Its body is long and cylindrical in shape and is covered in large greenish-brown scales which are edged with narrow bands of black across the back, paling to golden on the flanks and even paler on the belly. The tail is dark brown or black, the dorsal fin is a greyish-green in colour and all the other fins are orange-red. The dorsal fin has 3 spines and 7-9 soft rays while the anal fin has 3 spines and 7-10 rays. The vertebrae count is 42-48. It can grow to 60 cm standard length but most fish are around 30 cm. Distribution The chub is distributed throughout most of northern Eurasia, it can be found in the rivers flowing into the North, Baltic, northern Black, White, Barents and Caspian Sea basins, the Atlantic basins south to Adour drainage in France and in Great Britain north to 56 °C, in Scandinavia in southern Finland and southern Sweden north to around Stockholm. In the Mediterranean basin it is found in France from the Var to the Hérault, and may also be present in the Aude, drainages.