RDBUkr: Вразливі; RDBUkrCarp: NT
Value of species
B. waleckii has been regarded as a hybrid between female B. barbus and male B. carpathicus. Available data suggest that individuals of B. waleckii are not first generation hybrids, and that they have their own biological and reproduction characteristics; they might nevertheless be a species of hybrid origin. Pending demonstration that B. waleckii is not a distinct reproductive lineage, it is recognized as a valid species.
Vistula drainage (mainly San and Wisloka systems) downstream to Wilga (about 50 km from Warsaw), upper Dniestr basin in Poland and Ukraine. Similar barbels from upper Tisza system (Danube drainage) may belong to this species.
Rather small rivers with moderate to fast current in piedmont and montane zones at 200-600 m above sea level. Prefers stone, gravel, pebble or sand bottom and river stretches with rapids and deep holes. Spawns in shallow places over pebble bottom with fast current and clear water with high oxygen concentrations.
Males reproduce for the first time at two years, females at 4-5. Spawns in May-July. At beginning of spawning season, migrates upriver to shallow, smaller tributaries. Does not migrate for long distances. During feeding season, usually moves along main course of stream. Spawning peaks in evening, at sunset. Males and females splash. Individual females actively dig holes with anal, into which eggs are released. Probably spawns 2-3 times during a spawning season. Feeds on benthic invertebrates.