A dace is a small fish that can be one of many different species. The unmodified name is usually a reference to the common dace (Leuciscus leuciscus). This, like most fish called "daces", belongs to the family Cyprinidae, mostly in subfamily Leuciscinae.

Daces in the Cyprinidae:

• Common dace, Leuciscus leuciscus
• Chinese mud carp, Cirrhinus chinensis (called "dace" in Hong Kong) or mud carp (Cirrhinus molitorella)
• Columbia River dace, Ptychocheilus oregonensis (a pikeminnow)
• Desert dace, Eremichthys acros (a monotypic genus)
• European daces, genus Leuciscus
• Fallfish, Semotilus corporalis (a creek chub called "dace" in Canada)
• Horned dace, Semotilus atromaculatus (a creek chub)
• Japanese dace Tribolodon hakonensis, genus Tribolodon
• Korean splendid dace, Coreoleuciscus splendidus (a monotypic genus)
• Lake Candidus dace, Candidia barbata
• Mexican daces, genus †Evarra
• Moapa dace, Moapa coriacea (a monotypic genus)
• Northwest dace, Mylocheilus caurinus (a peamouth)
• Allegheny pearl dace, Margariscus margarita
• Northern pearl dace, Margariscus nachtriebi
• Ponto-Caspian daces, genus Petroleuciscus
• Redbelly daces, genus Chrosomus
• Redside daces, genus Clinostomus, e.g.
  • Redside dace Clinostomus elongatus
  • Rosyside dace Clinostomus funduloides
• Relict dace, Relictus solitarius (a monotypic genus)
• Riffle daces, genus Rhinichthys (including Tiaroga)
• Saskatchewan dace, Platygobio gracilis (a flathead chub)
• Shining dace, Semotilus corporalis (a creek chub)
• Spikedace, Meda fulgida (a monotypic genus)
• Spinedaces, genus Lepidomeda

Daces not in Cyprinidae

• Sea dace, the European seabass (Dicentrarchus labrax) of the Moronidae