Fundulidae is the family of topminnows and (mainly) North American killifishes. The 46 species are native to North America as far south as Yucatan, and to the islands of Bermuda and Cuba, occurring in both freshwater and marine environments.

Members of the family are all small; while the giant killifish Fundulus grandissimus and northern studfish Fundulus catenatus reach 20 centimetres (7.9 in) in length, but most species are under 10 cm.

The distinguishing characteristic of the family is the maxillary bone, which is twisted instead of being straight.

Species

FishBase lists 45 living and one recently extinct species in four genera:^[1]

• Genus Adinia
  • Diamond killifish, Adinia xenica (Jordan & Gilbert, 1882).
  • Adinia multifasciata
• Genus Fundulus (39 living species, 1 recently extinct)
• Genus Leptolucania
  • Pygmy killifish, Leptolucania ommata (Jordan, 1884).
• Genus Lucania (3 species)

References

1. ^ Froese, Rainer, and Daniel Pauly, eds. (2006). "Fundulidae" in FishBase. April 2006 version.

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