Ladislavia
Ladislavia is a monospecific genus of freshwater ray-finned fish belonging to the family Gobionidae, the gudgeons. The only species in the genus is Ladislavia taczanowskii, the Taczanowski's gudgeon, which is found in the Yalu and Amur drainages in Eastern Asia. The specific name honours the Polish zoologist Władysław Taczanowski.