The Vistula barbel (Barbus waleckii) is a disputed species of European freshwater fish in the cyprinid genus Barbus. It is often included in B. cyclolepis. More recently, it has been hypothesized to be a natural hybrid that originated from a common barbel (B. barbus) female mating with a Carpathian barbel (B. carpathicus) male. Nevertheless the populations do not seem to represent first-generation hybrids. It is recorded or suspected from Poland, Slovakia and Ukraine.