- Leuciscus souffia Risso, 1827
EUHD (II); RDBUkr: Вразливі; RDBUkrCarp: NT
Value of species
T. souffia agassii is often used for the Danube and Rhine populations, but there is no published evidence that they differ from the Rhône populations. In any event, if it were justified, the correct name for a Danube-Rhine species would be T. rysela and not T. agassii.
Mediterranean basin, from Aude to Var drainages (France, Switzerland; literature records from Tarn system [Garonne drainage] in fact refers to Hérault [each has a tributary named Dourbie]); Soca drainage (Italy, Slovenia); Cetina drainage (Croatia); uppermost Rhine drainage in Germany and Switzerland; Danube drainage: western tributaries in Germany, Austria, Slovenia, Croatia and part of Bosnia-Herzegovina, and upper Tisza system (Romania, Ukraine). Record from Aegean basin in Bulgaria based on misidentification of a possibly unnamed species. Introgression zone with T. muticellus in Var drainage (France).
Middle reaches of streams and rivers with clear water, moderately swift current and gravel bottom. Spawns in fast-flowing water on gravel bottom.
Gregarious. Spawns for the first time at three years. Spawns in March-May when temperature rises above 12°C, only once in each season. Feeds on insect larvae and algae.
- Соколов Н.Ю. Каталог колекції круглоротих і риб Державного природознавчого музею НАН України // Наукові записки Державного природознавчого музею. – Львів, 2004. – Т.19. – С. 15-28.