The Collaborative International Dictionary of English v.0.48:
Leuciscus \Leuciscus\ prop. n. A genus of freshwater fishes including the dace (Leuciscus leuciscus). Syn: genus Leuciscus. [WordNet 1.5]WordNet (r) 3.0 (2006):
Leuciscus n 1: a genus of fish including: dace, chub [syn: Leuciscus, genus Leuciscus]