IUCN: EN; RDBUkr: Зникаючі
Value of species
The species is known from five streams on the Crimea; Salgir, Alma, Chornya, Bel Bek and Kacha.
It's presence in Salgir needs to be confirmed, it is rare in Kacha and Chorna streams, almost extirpated in Almastill but still abundant in the Bel Bek stream.
Lower and middle parts of streams and estuaries. In estuaries, lives close to surface. Migrates to upper reaches of streams in piedmont and montane zones. Spawns in riffles with heavy current on gravel bottom.
Lives up to five years. Spawns for the first time at three years. Spawns in June-July. Forages in small stream estuaries and migrates upstream to spawn. Some juveniles forage in lower part of streams. Feeds on drifting and terrestrial insects and zooplankton. Regularly hybridizes with Squalius cephalus.