1. Subfamily Aplocheilichthyinae Myers, 1928
   1. Genus Aplocheilichthys Bleeker, 1863
      1. Species Aplocheilichthys spilauchen (Duméril, 1861)
      2. Species Aplocheilichthys bensonii (Peters, 1864) accepted as Aplocheilichthys spilauchen (Duméril, 1861)
      3. Species Aplocheilichthys spilauchena (Duméril, 1861) accepted as Aplocheilichthys spilauchen (Duméril, 1861) (misspelling)
      4. Species Aplocheilichthys tschiloangensis Ahl, 1928 accepted as Aplocheilichthys spilauchen (Duméril, 1861)
      5. Species Aplocheilichthys typus Bleeker, 1863 accepted as Aplocheilichthys spilauchen (Duméril, 1861)
   2. Genus Haplocheilichthys accepted as Aplocheilichthys Bleeker, 1863 (unaccepted > misspelling - incorrect subsequent spelling)
   3. Genus Haplochilichthys accepted as Aplocheilichthys Bleeker, 1863 (misspelling)
      1. Species Haplochilichthys spilauchen (Duméril, 1861) accepted as Aplocheilichthys spilauchen (Duméril, 1861)
      2. Species Haplochilichthys spilauchena (Duméril, 1861) accepted as Aplocheilichthys spilauchen (Duméril, 1861)
      3. Species Haplochilichthys stuhlmanni Ahl, 1924 accepted as Pantanodon stuhlmanni (Ahl, 1924)
2. Subfamily Poeciliinae Bonaparte, 1831
   1. Genus Belonesox Kner, 1860
      1. Species Belonesox belizanus Kner, 1860
   2. Genus Brachyrhaphis Regan, 1913
      1. Species Brachyrhaphis cascajalensis (Meek & Hildebrand, 1913)
   3. Genus Cnesterodon Garman, 1895
      1. Species Cnesterodon decemmaculatus (Jenyns, 1842)
   4. Genus Gambusia Poey, 1854
      1. Species Gambusia affinis (Baird & Girard, 1853)
      2. Species Gambusia dominicensis Regan, 1913
      3. Species Gambusia heterochir Hubbs, 1957
      4. Species Gambusia holbrooki Girard, 1859
      5. Species Gambusia lemaitrei Fowler, 1950
      6. Species Gambusia luma Rosen & Bailey, 1963
      7. Species Gambusia manni Hubbs, 1927
      8. Species Gambusia marshi Minckley & Craddock, 1962
      9. Species Gambusia nicaraguensis Günther, 1866
      10. Species Gambusia puncticulata Poey, 1854
      11. Species Gambusia rhizophorae Rivas, 1969
      12. Species Gambusia sexradiata Hubbs, 1936
      13. Species Gambusia wrayi Regan, 1913
      14. Species Gambusia xanthosoma Greenfield, 1983
      15. Species Gambusia aestiputeus Fowler, 1950 accepted as Gambusia nicaraguensis Günther, 1866
      16. Species Gambusia aestiputius Fowler, 1950 accepted as Gambusia nicaraguensis Günther, 1866 (misspelling)
      17. Species Gambusia cascajalensis Meek & Hildebrand, 1913 accepted as Brachyrhaphis cascajalensis (Meek & Hildebrand, 1913)
      18. Species Gambusia caymanensis Regan, 1913 accepted as Gambusia puncticulata Poey, 1854
      19. Species Gambusia dovii Regan, 1913 accepted as Gambusia nicaraguensis Günther, 1866
      20. Species Gambusia fasciata Meek, 1904 accepted as Poeciliopsis fasciata (Meek, 1904)
      21. Species Gambusia gracilior Regan, 1913 accepted as Gambusia wrayi Regan, 1913
      22. Species Gambusia gracilis Girard, 1859 accepted as Gambusia affinis (Baird & Girard, 1853)
      23. Species Gambusia holbrocki Girard, 1859 accepted as Gambusia holbrooki Girard, 1859 (misspelling)
      24. Species Gambusia holbrookii Girard, 1859 accepted as Gambusia holbrooki Girard, 1859 (misspelling)
      25. Species Gambusia howelli Rivas, 1944 accepted as Gambusia puncticulata Poey, 1854
      26. Species Gambusia hubbsi Breder, 1934 accepted as Gambusia puncticulata Poey, 1854
      27. Species Gambusia humilis Günther, 1866 accepted as Gambusia affinis (Baird & Girard, 1853)
      28. Species Gambusia mcneili Fowler, 1916 accepted as Gambusia nicaraguensis Günther, 1866 (misspelling)
      29. Species Gambusia mcnieli Fowler, 1916 accepted as Gambusia nicaraguensis Günther, 1866
      30. Species Gambusia melanosticta Regan, 1913 accepted as Gambusia puncticulata Poey, 1854
      31. Species Gambusia modesta Troschel, 1865 accepted as Poecilia sphenops Valenciennes, 1846 (synonym)
      32. Species Gambusia nigropunctata Regan, 1913 accepted as Gambusia puncticulata Poey, 1854
      33. Species Gambusia oligosticta Regan, 1913 accepted as Gambusia puncticulata Poey, 1854
      34. Species Gambusia patruelis (Baird & Girard, 1853) accepted as Gambusia affinis (Baird & Girard, 1853)
      35. Species Gambusia picturada Poey, 1868 accepted as Gambusia puncticulata Poey, 1854
      36. Species Gambusia plumbea Troschel, 1865 accepted as Poecilia sphenops Valenciennes, 1846
      37. Species Gambusia turrubarensis Meek, 1912 accepted as Poeciliopsis turrubarensis (Meek, 1912)
   5. Genus Heterandria Agassiz, 1853
      1. Species Heterandria formosa Girard, 1859
      2. Species Heterandria affinis Baird & Girard, 1853 accepted as Gambusia affinis (Baird & Girard, 1853)
      3. Species Heterandria colombianus Eigenmann & Henn, 1912 accepted as Poeciliopsis turrubarensis (Meek, 1912) (synonym)
      4. Species Heterandria guppyi (Günther, 1866) accepted as Poecilia reticulata Peters, 1859 (misspelling)
      5. Species Heterandria holbrooki (Girard, 1859) accepted as Gambusia holbrooki Girard, 1859
      6. Species Heterandria patruelis Baird & Girard, 1853 accepted as Gambusia affinis (Baird & Girard, 1853)
   6. Genus Limia Poey, 1854
      1. Species Limia caymanensis Rivas & Fink, 1970
      2. Species Limia rivasi Franz & Burgess, 1983
      3. Species Limia vittata (Guichenot, 1853)
      4. Species Limia cubensis Poey, 1854 accepted as Limia vittata (Guichenot, 1853)
      5. Species Limia formosa Girard, 1859 accepted as Poecilia formosa (Girard, 1859)
      6. Species Limia islai Rodriguez-Silva & Weaver, 2020 accepted as Poecilia islai (Rodriguez-Silva & Weaver, 2020)
      7. Species Limia mandibularis Rodriguez-Silva, Torres-Pineda & Josaphat, 2020 accepted as Poecilia mandibularis (Rodriguez-Silva, Torres-Pineda & Josaphat, 2020)
      8. Species Limia matamorensis Girard, 1859 accepted as Poecilia latipinna (Lesueur, 1821) (synonym)
      9. Species Limia pavonina Poey, 1876 accepted as Limia vittata (Guichenot, 1853)
      10. Species Limia poeciloides Girard, 1858 accepted as Poecilia latipinna (Lesueur, 1821) (synonym)
      11. Species Limia venusta Girard, 1858 accepted as Lucania parva (Baird & Girard, 1855)
   7. Genus Micropoecilia Hubbs, 1926
      1. Species Micropoecilia picta (Regan, 1913)
      2. Species Micropoecilia amazonica (Garman, 1895) accepted as Poecilia parae Eigenmann, 1894 (junior synonym)
      3. Species Micropoecilia parae (Eigenmann, 1894) accepted as Poecilia parae Eigenmann, 1894
   8. Genus Phalloceros Eigenmann, 1907
      1. Species Phalloceros caudimaculatus (Hensel, 1868)
      2. Species Phalloceros caudomaculatus (Hensel, 1868) accepted as Phalloceros caudimaculatus (Hensel, 1868) (misspelling)
   9. Genus Poecilia Bloch & Schneider, 1801
      1. Species Poecilia akroa Figueiredo & Moreira, 2018
      2. Species Poecilia formosa (Girard, 1859)
      3. Species Poecilia islai (Rodriguez-Silva & Weaver, 2020)
      4. Species Poecilia kykesis Poeser, 2002
      5. Species Poecilia latipinna (Lesueur, 1821)
      6. Species Poecilia mandibularis (Rodriguez-Silva, Torres-Pineda & Josaphat, 2020)
      7. Species Poecilia mexicana Steindachner, 1863
      8. Species Poecilia orri Fowler, 1943
      9. Species Poecilia parae Eigenmann, 1894
      10. Species Poecilia reticulata Peters, 1859
      11. Species Poecilia sphenops Valenciennes, 1846
      12. Species Poecilia velifera (Regan, 1914)
      13. Species Poecilia vivipara Bloch & Schneider, 1801
      14. Species Poecilia amazonica Garman, 1895 accepted as Poecilia parae Eigenmann, 1894 (synonym)
      15. Species Poecilia bensonii Peters, 1864 accepted as Aplocheilichthys spilauchen (Duméril, 1861)
      16. Species Poecilia boucardii Steindachner, 1878 accepted as Poecilia sphenops Valenciennes, 1846
      17. Species Poecilia calaritana Cuvier, 1829 accepted as Aphanius fasciatus (Valenciennes, 1821)
      18. Species Poecilia chisoyensis Günther, 1866 accepted as Poecilia sphenops Valenciennes, 1846
      19. Species Poecilia coenicola Bloch & Schneider, 1801 accepted as Fundulus heteroclitus (Linnaeus, 1766)
      20. Species Poecilia cuneata Garman, 1895 accepted as Poecilia mexicana Steindachner, 1863
      21. Species Poecilia decemmaculata Jenyns, 1842 accepted as Cnesterodon decemmaculatus (Jenyns, 1842)
      22. Species Poecilia dovii Günther, 1866 accepted as Poecilia sphenops Valenciennes, 1846
      23. Species Poecilia elongata Günther, 1866 accepted as Poeciliopsis elongata (Günther, 1866)
      24. Species Poecilia fasciata Bloch & Schneider, 1801 accepted as Fundulus heteroclitus (Linnaeus, 1766)
      25. Species Poecilia fusca Forster, 1801 accepted as Eleotris fusca (Forster, 1801)
      26. Species Poecilia gracilis Valenciennes, 1846 accepted as Cnesterodon decemmaculatus (Jenyns, 1842)
      27. Species Poecilia helleri (Heckel, 1848) accepted as Xiphophorus hellerii Heckel, 1848 (misspelling)
      28. Species Poecilia kykensis Poeser, 2002 accepted as Poecilia kykesis Poeser, 2002
      29. Species Poecilia latipes Temminck & Schlegel, 1846 accepted as Oryzias latipes (Temminck & Schlegel, 1846)
      30. Species Poecilia limantouri Jordan & Snyder, 1899 accepted as Poecilia mexicana Steindachner, 1863
      31. Species Poecilia lineolata Girard, 1858 accepted as Poecilia latipinna (Lesueur, 1821) (synonym)
      32. Species Poecilia multilineata Lesueur, 1821 accepted as Poecilia latipinna (Lesueur, 1821) (synonym)
      33. Species Poecilia picta Regan, 1913 accepted as Micropoecilia picta (Regan, 1913)
      34. Species Poecilia reticulate Peters, 1859 accepted as Poecilia reticulata Peters, 1859 (misspelling)
      35. Species Poecilia reticulatus Peters, 1859 accepted as Poecilia reticulata Peters, 1859 (misspelling)
      36. Species Poecilia rivasi (Franz & Burgess, 1983) accepted as Limia rivasi Franz & Burgess, 1983
      37. Species Poecilia schneideri Valenciennes, 1821 accepted as Poecilia vivipara Bloch & Schneider, 1801
      38. Species Poecilia spilauchena Duméril, 1861 accepted as Aplocheilichthys spilauchen (Duméril, 1861)
      39. Species Poecilia spilonota Regan, 1908 accepted as Poecilia sphenops Valenciennes, 1846
      40. Species Poecilia spilurus Günther, 1866 accepted as Poecilia sphenops Valenciennes, 1846
      41. Species Poecilia surinamensis Valenciennes, 1821 accepted as Poecilia vivipara Bloch & Schneider, 1801
      42. Species Poecilia tenuis Meek, 1907 accepted as Poecilia sphenops Valenciennes, 1846
      43. Species Poecilia thermalis Steindachner, 1863 accepted as Poecilia sphenops Valenciennes, 1846
      44. Species Poecilia unimaculata Valenciennes, 1821 accepted as Poecilia vivipara Bloch & Schneider, 1801
      45. Species Poecilia vetiprovidentiae Fowler, 1950 accepted as Poecilia sphenops Valenciennes, 1846
      46. Species Poecilia vittata Guichenot, 1853 accepted as Limia vittata (Guichenot, 1853)
   10. Genus Poeciliopsis Regan, 1913
       1. Species Poeciliopsis elongata (Günther, 1866)
       2. Species Poeciliopsis fasciata (Meek, 1904)
       3. Species Poeciliopsis jackschultzi Conway, Mateos & Vrijenhoek, 2019
       4. Species Poeciliopsis latidens (Garman, 1895)
       5. Species Poeciliopsis prolifica Miller, 1960
       6. Species Poeciliopsis turrubarensis (Meek, 1912)
   11. Genus Priapichthys Regan, 1913
       1. Species Priapichthys panamensis Meek & Hildebrand, 1916
       2. Species Priapichthys fosteri Hildebrand, 1925 accepted as Poeciliopsis turrubarensis (Meek, 1912)
   12. Genus Xiphophorus Heckel, 1848
       1. Species Xiphophorus hellerii Heckel, 1848
       2. Species Xiphophorus milleri Rosen, 1960
       3. Species Xiphophorus brevis Regan, 1907 accepted as Xiphophorus hellerii Heckel, 1848
       4. Species Xiphophorus guntheri Jordan & Evermann, 1896 accepted as Xiphophorus hellerii Heckel, 1848
       5. Species Xiphophorus helleri Heckel, 1848 accepted as Xiphophorus hellerii Heckel, 1848 (misspelling)
       6. Species Xiphophorus rachovii Regan, 1911 accepted as Xiphophorus hellerii Heckel, 1848
       7. Species Xiphophorus strigatus Regan, 1907 accepted as Xiphophorus hellerii Heckel, 1848
   13. Genus Acanthophacelus Eigenmann, 1907 accepted as Poecilia Bloch & Schneider, 1801
       1. Species Acanthophacelus guppii (Günther, 1866) accepted as Poecilia reticulata Peters, 1859
       2. Species Acanthophacelus melanzonus Eigenmann, 1909 accepted as Poecilia parae Eigenmann, 1894 (synonym)
       3. Species Acanthophacelus reticulatus (Peters, 1859) accepted as Poecilia reticulata Peters, 1859
   14. Genus Flexipenis Hubbs in Rivas, 1963 accepted as Gambusia Poey, 1854
   15. Genus Glaridichthys Garman, 1896 accepted as Girardinus Poey, 1854
       1. Species Glaridichthys latidens (Garman, 1895) accepted as Poeciliopsis latidens (Garman, 1895)
   16. Genus Glaridodon Garman, 1895 accepted as Girardinus Poey, 1854
       1. Species Glaridodon latidens Garman, 1895 accepted as Poeciliopsis latidens (Garman, 1895)
   17. Genus Lembesseia Fowler, 1949 accepted as Poecilia Bloch & Schneider, 1801
       1. Species Lembesseia parvianalis Fowler, 1949 accepted as Poecilia sphenops Valenciennes, 1846
   18. Genus Leptorhaphis Regan, 1913 accepted as Poeciliopsis Regan, 1913
   19. Genus Molinesia accepted as Mollienesia Lesueur, 1821 (misspelling)
   20. Genus Mollienesia Lesueur, 1821 accepted as Poecilia Bloch & Schneider, 1801
       1. Species Mollienesia elongata (Günther, 1866) accepted as Poeciliopsis elongata (Günther, 1866)
       2. Species Mollienesia formosa (Girard, 1859) accepted as Poecilia formosa (Girard, 1859)
       3. Species Mollienesia latipinna Lesueur, 1821 accepted as Poecilia latipinna (Lesueur, 1821) (synonym)
       4. Species Mollienesia pallida de Buen, 1943 accepted as Poecilia sphenops Valenciennes, 1846
       5. Species Mollienesia velifera Regan, 1914 accepted as Poecilia velifera (Regan, 1914)
   21. Genus Mollienisia accepted as Mollienesia Lesueur, 1821 (misspelling)
       1. Species Mollienisia latipinna Lesueur, 1821 accepted as Poecilia latipinna (Lesueur, 1821) (misspelling)
   22. Genus Neopoecilia Hubbs, 1924 accepted as Poecilia Bloch & Schneider, 1801
       1. Species Neopoecilia holacanthus Hubbs, 1924 accepted as Poecilia vivipara Bloch & Schneider, 1801
   23. Genus Pamphoria Regan, 1913 accepted as Poecilia Bloch & Schneider, 1801
   24. Genus Parapoecilia Hubbs, 1924 accepted as Poecilia Bloch & Schneider, 1801
   25. Genus Platypoecilus Günther, 1866 accepted as Xiphophorus Heckel, 1848
       1. Species Platypoecilus mentalis Gill, 1877 accepted as Poecilia sphenops Valenciennes, 1846
       2. Species Platypoecilus nelsoni Meek, 1904 accepted as Poecilia sphenops Valenciennes, 1846
       3. Species Platypoecilus tropicus Meek, 1907 accepted as Poecilia sphenops Valenciennes, 1846
   26. Genus Plectrophallus Fowler, 1932 accepted as Brachyrhaphis Regan, 1913
   27. Genus Pocilia accepted as Poecilia Bloch & Schneider, 1801 (unaccepted > misspelling - incorrect subsequent spelling)
       1. Species Pocilia reticulata Peters, 1859 accepted as Poecilia reticulata Peters, 1859 (unaccepted > misspelling - incorrect subsequent spelling)
   28. Genus Poeciliodes Steindachner, 1863 accepted as Heterandria Agassiz, 1853 (synonym)
   29. Genus Schizophallus Hubbs, 1926 accepted as Gambusia Poey, 1854 (synonym)
       1. Species Schizophallus holbrooki (Girard, 1859) accepted as Gambusia holbrooki Girard, 1859
   30. Genus Zygonectes Agassiz, 1854 accepted as Fundulus Lacepède, 1803
       1. Species Zygonectes atrilatus Jordan & Brayton, 1878 accepted as Gambusia holbrooki Girard, 1859
       2. Species Zygonectes brachypterus Cope, 1880 accepted as Gambusia affinis (Baird & Girard, 1853)
       3. Species Zygonectes funduloides Evermann, 1892 accepted as Fundulus pulvereus (Evermann, 1892) (synonym)
       4. Species Zygonectes gracilis (Girard, 1859) accepted as Gambusia affinis (Baird & Girard, 1853)
       5. Species Zygonectes inurus Jordan & Gilbert, 1882 accepted as Gambusia affinis (Baird & Girard, 1853)
       6. Species Zygonectes jenkinsi Evermann, 1892 accepted as Fundulus jenkinsi (Evermann, 1892)
       7. Species Zygonectes patruelis (Baird & Girard, 1853) accepted as Gambusia affinis (Baird & Girard, 1853)
       8. Species Zygonectes pulvereus Evermann, 1892 accepted as Fundulus pulvereus (Evermann, 1892) (synonym)
       9. Species Zygonectes rubrifrons Jordan, 1880 accepted as Fundulus rubrifrons (Jordan, 1880)
   31. Genus Zygonectus (uncertain > unassessed)
3. Subfamily Procatopodinae Fowler, 1916
   1. Genus Pantanodon Myers, 1955
      1. Species Pantanodon madagascariensis (Arnoult, 1963)
      2. Species Pantanodon stuhlmanni (Ahl, 1924)
      3. Species Pantanodon podoxys Myers, 1955 accepted as Pantanodon stuhlmanni (Ahl, 1924)

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