Có 39 loài được ghi nhận trong chi này:[1]

• Fundulus albolineatus C. H. Gilbert, 1891 (Whiteline topminnow (extinct))
• Fundulus bermudae Günther, 1874 (Bermuda killifish)
• Fundulus bifax Cashner & Rogers, 1988 (Stippled studfish)
• Fundulus blairae Wiley & D. D. Hall, 1975 (Western starhead topminnow)
• Fundulus catenatus (D. H. Storer (fr), 1846) (Northern studfish)
• Fundulus chrysotus (Günther, 1866) (Golden topminnow)
• Fundulus cingulatus Valenciennes, 1846 (Banded topminnow)
• Fundulus confluentus Goode & T. H. Bean, 1879 (Marsh killifish)
• Fundulus diaphanus (Lesueur, 1817)
  • Fundulus diaphanus diaphanus (Lesueur, 1817) (Banded killifish)
  • Fundulus diaphanus menona D. S. Jordan & Copeland, 1877
• Fundulus dispar (Agassiz, 1854) (Starhead topminnow)
• Fundulus escambiae (Bollman, 1887) (Russetfin topminnow)
• Fundulus euryzonus Suttkus & Cashner, 1981 (Broadstripe topminnow)
• Fundulus grandis S. F. Baird & Girard, 1853 (Gulf killifish)
• Fundulus grandissimus C. L. Hubbs, 1936 (Giant killifish)
• Fundulus heteroclitus (Linnaeus, 1766)
  • Fundulus heteroclitus heteroclitus (Linnaeus, 1766) (Mummichog)
  • Fundulus heteroclitus macrolepidotus (Walbaum, 1792)
• Fundulus jenkinsi (Evermann, 1892) (Saltmarsh topminnow)
• Fundulus julisia J. D. Williams & Etnier, 1982 (Barrens topminnow)
• Fundulus kansae Garman, 1895 (Northern plains killifish)
• Fundulus lima Vaillant, 1894
• Fundulus lineolatus (Agassiz, 1854) (Lined topminnow)
• Fundulus luciae (S. F. Baird, 1855) (Spotfin killifish)
• Fundulus majalis (Walbaum, 1792) (Striped killifish, Striped mummichog)
• Fundulus notatus (Rafinesque, 1820) (Blackstripe topminnow)
• Fundulus nottii (Agassiz, 1854) (Bayou topminnow)
• Fundulus olivaceus (D. H. Storer (fr), 1845) (Blackspotted topminnow)
• Fundulus parvipinnis Girard, 1854 (California killifish)
• Fundulus persimilis R. R. Miller, 1955 (Yucatan killifish)
• Fundulus philpisteri García-Ramírez, Contreras-Balderas & Lozano-Vilano, 2007
• Fundulus pulvereus (Evermann, 1892) (Bayou killifish)
• Fundulus rathbuni D. S. Jordan & Meek, 1889 (Speckled killifish)
• Fundulus relictus Able & Felley, 1988 (Lover's Lake killifish)
• Fundulus rubrifrons (D. S. Jordan, 1880) (Redface topminnow)
• Fundulus saguanus Rivas, 1948
• Fundulus sciadicus Cope, 1865 (Plains topminnow)
• Fundulus seminolis Girard, 1859 (Seminole killifish)
• Fundulus similis (S. F. Baird & Girard, 1853) (Longnose killifish)
• Fundulus stellifer (D. S. Jordan, 1877) (Southern studfish)
• Fundulus waccamensis C. L. Hubbs & Raney, 1946 (Waccamaw killifish)
• Fundulus zebrinus D. S. Jordan & C. H. Gilbert, 1883 (Plains killifish)