| Nominal Species (n = 523) | Present allocation (n = 347) | Ref. |
|---|---|---|
| Procatopus abbreviatus Pellegrin, 1929 | Procatopus similis | 7372 |
| Procatopus aberrans Ahl, 1927 | Procatopus aberrans | 3788 |
| Alfaro acutiventralis Meek, 1912 | Alfaro cultratus | 50894 |
| Gambusia aestiputeus Fowler, 1950 | Gambusia nicaraguensis | 50894 |
| Heterandria affinis Baird & Girard, 1853 | Gambusia affinis | 50894 |
| Phalloceros alessandrae Lucinda, 2008 | Phalloceros alessandrae | 76852 |
| Gambusia alvarezi Hubbs & Springer, 1957 | Gambusia alvarezi | 50894 |
| Poecilia amates Miller, 1907 | Phallichthys amates | 50894 |
| Poecilia amazonica Garman, 1895 | Poecilia parae | 86877 |
| Petalosoma amazonum Regan, 1911 | Alfaro cultratus | 50894 |
| Gambusia amistadensis Peden, 1973 | Gambusia amistadensis | 5723 |
| Haplochilichthys analis Worthington, 1932 | Platypanchax modestus | 3788 |
| Xiphophorus andersi Meyer & Schartl, 1980 | Xiphophorus andersi | 26855 |
| Procatopus andreaseni Clausen, 1959 | Procatopus aberrans | 7372 |
| Phalloceros anisophallos Lucinda, 2008 | Phalloceros anisophallos | 76852 |
| Gambusia annectens Regan, 1907 | Priapichthys annectens | 26130 |
| Priapichthys annectens hesperis Hubbs, 1924 | Priapichthys annectens | 27116 |
| Poeciliopsis anonas de Buen, 1943 | Poeciliopsis balsas | 26130 |
| Haplochilus antinorii Vinciguerra, 1883 | Micropanchax antinorii | 3788 |
| Heterandria anzuetoi Rosen & Bailey, 1979 | Heterandria anzuetoi | 50894 |
| Pamphorichthys araguaiensis Costa, 1991 | Pamphorichthys araguaiensis | 26855 |
| Limia arnoldi Regan, 1913 | Limia nigrofasciata | 50894 |
| Phalloceros aspilos Lucinda, 2008 | Phalloceros aspilos | 76852 |
| Glaridichthys atherinoides Rivas, 1944 | Girardinus falcatus | 50894 |
| Zygonectes atrilatus Jordan & Brayton, 1878 | Gambusia holbrooki | 1672 |
| Haplochilus atripinna (non Pfeffer, 1896) | Micropanchax johnstoni | 3788 |
| Haplochilus atripinna Pfeffer, 1896 | Lacustricola atripinna | 3788 |
| Haplochilus atripinna (non Pfeffer, 1896) | Micropanchax loati | 3788 |
| Haplochilus atripinna (non Pfeffer, 1896) | Pantanodon stuhlmanni | 3788 |
| Quintana atrizona Hubbs, 1934 | Quintana atrizona | 13498 |
| Gambusia atrora Rosen & Bailey, 1963 | Gambusia atrora | 50894 |
| Heterandria attenuata Rosen & Bailey, 1979 | Heterandria attenuata | 26130 |
| Gambusia atzi Rosen & Gordon, 1951 | Heterophallus rachovii | 50894 |
| Gambusia aurata Miller & Minckley, 1970 | Gambusia aurata | 50894 |
| Platypoecilus aurata Stoye, 1935 | Xiphophorus maculatus | 27116 |
| Pseudopoecilia austrocolumbiana Radda, 1987 | Pseudopoecilia austrocolumbiana | 26130 |
| Poeciliopsis baenschi Meyer, Radda, Riehl & Feichtinger, 1986 | Poeciliopsis baenschi | 26130 |
| Poeciliopsis balsas Hubbs, 1926 | Poeciliopsis balsas | 26130 |
| Gambusia baracoana Rivas, 1944 | Gambusia baracoana | 50894 |
| Micropanchax baudoni Myers, 1924 | Micropanchax hutereaui | 3788 |
| Gambusia beebei Myers, 1935 | Gambusia beebei | 50894 |
| Belonesox belizanus Kner, 1860 | Belonesox belizanus | 5723 |
| Belonesox belizanus maxillosus Hubbs, 1936 | Belonesox belizanus | 6466 |
| Poecilia bensonii Peters, 1864 | Aplocheilichthys spilauchen | 3788 |
| Acanthophacelus bifurcus (non Eigenmann, 1909) | Poecilia parae | 26130 |
| Acanthophacelus bifurcus Eigenmann, 1909 | Micropoecilia bifurca | 50894 |
| Poeciliodes bimaculatus Steindachner, 1863 | Heterandria bimaculata | 50894 |
| Xiphophorus bimaculatus Heckel, 1848 | Heterandria bimaculata | 30499 |
| Pseudoxiphophorus bimaculatus peninsulae Hubbs, 1936 | Heterandria bimaculata | 50894 |
| Pseudoxiphophorus bimaculatus taeniatus Regan, 1905 | Heterandria bimaculata | 50894 |
| Poecilia boesemani Poeser, 2003 | Poecilia boesemani | 50838 |
| Gambusia bonita Meek, 1904 | Priapella bonita | 26282 |
| Poecilia boucardii Steindachner, 1878 | Poecilia sphenops | 27116 |
| Aplocheilichthys bracheti Berkenkamp, 1983 | Micropanchax bracheti | 57259 |
| Zygonectes brachypterus Cope, 1880 | Gambusia affinis | 50894 |
| Poecilia branneri Eigenmann, 1894 | Micropoecilia branneri | 50894 |
| Cnesterodon brevirostratus Rosa & Costa, 1993 | Cnesterodon brevirostratus | 30833 |
| Xiphophorus brevis Regan, 1907 | Xiphophorus hellerii | 26130 |
| Congopanchax brichardi Poll, 1971 | Poropanchax brichardi | 3788 |
| Gambusia bucheri Rivas, 1944 | Gambusia bucheri | 50894 |
| Phalloceros buckupi Lucinda, 2008 | Phalloceros buckupi | 76852 |
| Haplochilichthys bukobanus Ahl, 1924 | Lacustricola bukobanus | 3788 |
| Poecilia butleri Jordan, 1889 | Poecilia butleri | 26130 |
| Haplochilus cabindae Boulenger, 1911 | Plataplochilus cabindae | 3788 |
| Haplochilus cabindae (non Boulenger, 1911) | Lacustricola katangae | 3788 |
| Gambusia caliensis Eigenmann & Henn, 1916 | Priapichthys caliensis | 50894 |
| Aplocheilichthys camerunensis Radda, 1971 | Micropanchax camerunensis | 81647 |
| Gambusia cana Meek & Hildebrand, 1913 | Neoheterandria cana | 26130 |
| Haplochilus carlislei Van der Horst, 1934 | Lacustricola katangae | 3788 |
| Cnesterodon carnegiei Haseman, 1911 | Cnesterodon carnegiei | 50894 |
| Gambusia cascajalensis Meek & Hildebrand, 1913 | Brachyrhaphis cascajalensis | 26130 |
| Heterandria cataractae Rosen, 1979 | Heterandria cataractae | 26130 |
| Poeciliopsis catemaco Miller, 1975 | Poeciliopsis catemaco | 26130 |
| Poecilia catemaconis Miller, 1975 | Poecilia catemaconis | 26855 |
| Hypsopanchax catenatus Radda, 1981 | Hypsopanchax catenatus | 3788 |
| Girardinus caucanus Steindachner, 1880 | Poecilia caucana | 26130 |
| Poecilia caudata Meek, 1909 | Poecilia sphenops | 27116 |
| Girardinus caudimaculatus Hensel, 1868 | Phalloceros caudimaculatus | 7300 |
| Limia caudofasciata Regan, 1913 | Poecilia caudofasciata | 27116 |
| Limia caudofasciata tricolor Stoye, 1933 | Poecilia caudofasciata | 50894 |
| Gambusia caudovittata Regan, 1913 | Priapichthys nigroventralis | 50894 |
| Gambusia caymanensis Regan, 1913 | Gambusia puncticulata | 50894 |
| Limia caymanensis Rivas & Fink, 1970 | Limia caymanensis | 50894 |
| Aplocheilichthys centralis Seegers, 1996 | Lacustricola centralis | 30546 |
| Plataplochilus chalcopyrus Lambert, 1963 | Plataplochilus chalcopyrus | 42871 |
| Priapella chamulae Schartl, Meyer & Wilde, 2006 | Priapella chamulae | 57748 |
| Poecilia chica Miller, 1975 | Poecilia chica | 26855 |
| Poecilia chisoyensis Günther, 1866 | Poecilia sphenops | 27116 |
| Aplocheilus chobensis Fowler, 1935 | Micropanchax hutereaui | 3788 |
| Diphyacantha chocoensis Henn, 1916 | Priapichthys chocoensis | 50894 |
| Gambusia clarkhubbsi Garrett & Edwards, 2003 | Gambusia clarkhubbsi | 52090 |
| Xiphophorus clemenciae Álvarez, 1959 | Xiphophorus clemenciae | 26855 |
| Heterandria colombianus Eigenmann & Henn, 1912 | Poeciliopsis turrubarensis | 27116 |
| Priapella compressa Álvarez, 1948 | Priapella compressa | 26855 |
| Xiphophorus continens Rauchenberger, Kallman & Morizot, 1990 | Xiphophorus continens | 26855 |
| Limia couchiana Girard, 1859 | Xiphophorus couchianus | 26282 |
| Poecilia couchii Günther, 1866 | Xiphophorus couchianus | 27116 |
| Girardinus creolus Garman, 1895 | Girardinus creolus | 30837 |
| Xenodexia ctenolepis Hubbs, 1950 | Xenodexia ctenolepis | 26130 |
| Heterandria cubensis Eigenmann, 1903 | Girardinus cubensis | 26282 |
| Limia cubensis Poey, 1854 | Limia vittata | 50894 |
| Petalosoma cultratum Regan, 1908 | Alfaro cultratus | 50894 |
| Poecilia cuneata Garman, 1895 | Poecilia mexicana | 26282 |
| Lamprichthys curtianalis David, 1936 | Lamprichthys tanganicanus | 3788 |
| Platypoecilus cyanellus Meinken, 1935 | Xiphophorus maculatus | 27116 |
| Gambusia darienensis Meek & Hildebrand, 1913 | Priapichthys darienensis | 50894 |
| Poecilia dauli Meyer & Radda, 2000 | Poecilia dauli | 42987 |
| Poecilia decemmaculata Jenyns, 1842 | Cnesterodon decemmaculatus | 50894 |
| Girardinus denticulatus Garman, 1895 | Girardinus denticulatus | 13498 |
| Haplochilus deprimozi Pellegrin, 1928 | Platypanchax modestus | 59344 |
| Haplochilus dhonti Boulenger, 1919 | Lacustricola pumilus | 3788 |
| Heterandria dirempta Rosen, 1979 | Heterandria dirempta | 26130 |
| Aplocheilichthys dispar Gras, 1961 | Poropanchax luxophthalmus | 42871 |
| Phallotorynus dispilos Lucinda, Rosa & Reis, 2005 | Phallotorynus dispilos | 56059 |
| Gambusia dominicensis Regan, 1913 | Gambusia dominicensis | 50894 |
| Platypoecilus dominicensis Evermann & Clark, 1906 | Poecilia dominicensis | 86697 |
| Poecilia dominicensis Valenciennes, 1846 | Limia dominicensis | 50894 |
| Gambusia dovii Regan, 1913 | Gambusia nicaraguensis | 30838 |
| Poecilia dovii Günther, 1866 | Poecilia sphenops | 27116 |
| Dicerophallus echeagarayi Álvarez, 1952 | Gambusia echeagarayi | 50894 |
| Aplocheilichthys eduardensis David & Poll, 1937 | Lacustricola vitschumbaensis | 47311 |
| Aplocheilichthys ehrichi Berkenkamp & Etzel, 1994 | Micropanchax ehrichi | 57259 |
| Phalloptychus eigenmanni Henn, 1916 | Phalloptychus eigenmanni | 26130 |
| Phalloceros elachistos Lucinda, 2008 | Phalloceros elachistos | 76852 |
| Mollienesia elegans Trewavas, 1948 | Poecilia elegans | 26282 |
| Neoheterandria elegans Henn, 1916 | Neoheterandria elegans | 26130 |
| Poecilia elongata Günther, 1866 | Poeciliopsis elongata | 26130 |
| Phalloceros enneaktinos Lucinda, 2008 | Phalloceros enneaktinos | 76852 |
| Gambusia episcopi Steindachner, 1878 | Brachyrhaphis episcopi | 26130 |
| Micropanchax ericae Meinken, 1971 | Lacustricola bukobanus | 47311 |
| Gambusia eurystoma Miller, 1975 | Gambusia eurystoma | 50894 |
| Phallichthys fairweatheri Rosen & Bailey, 1959 | Phallichthys fairweatheri | 26130 |
| Glaridichthys falcatus Eigenmann, 1903 | Girardinus falcatus | 50894 |
| Gambusia fasciata Meek, 1904 | Poeciliopsis fasciata | 26130 |
| Molinesia fasciata Müller & Troschel, 1844 | Poecilia vivipara | 26728 |
| Phallotorynus fasciolatus Henn, 1916 | Phallotorynus fasciolatus | 26130 |
| Poecilia festae Boulenger, 1898 | Pseudopoecilia festae | 26130 |
| Gambusia finlayi Santa Maria, 1956 | Gambusia punctata | 50894 |
| Aplocheilichthys flavipinnis Meinken, 1932 | Micropanchax pfaffi | 3788 |
| Heterandria formosa Girard, 1859 | Heterandria formosa | 5723 |
| Limia formosa Girard, 1859 | Poecilia formosa | 12965 |
| Priapichthys fosteri Hildebrand, 1925 | Poeciliopsis turrubarensis | 27116 |
| Poecilia fria Eigenmann & Henn, 1914 | Pseudopoecilia fria | 50894 |
| Limia fuscomaculata Rivas, 1980 | Limia fuscomaculata | 50894 |
| Gambusia gaigei Hubbs, 1929 | Gambusia gaigei | 3814 |
| Aplocheilichthys gambiensis Svensson, 1933 | Poropanchax normani | 3788 |
| Girardinus garmani Eigenmann, 1903 | Girardinus metallicus | 50894 |
| Limia garnieri Rivas, 1980 | Limia garnieri | 50894 |
| Gambusia geiseri Hubbs & Hubbs, 1957 | Gambusia geiseri | 3814 |
| Gambusia georgei Hubbs & Peden, 1969 | Gambusia georgei | 3814 |
| Xiphophorus gillii Kner, 1863 | Poecilia gillii | 26282 |
| Procatopus glaucicaudis Clausen, 1959 | Procatopus similis | 27139 |
| Xiphophorus gordoni Miller & Minckley, 1963 | Xiphophorus gordoni | 3881 |
| Gambusia gracilior Regan, 1913 | Gambusia wrayi | 50894 |
| Gambusia gracilis (non Girard, 1859) | Gambusia marshi | 12960 |
| Gambusia gracilis Girard, 1859 | Gambusia affinis | 50894 |
| Mollienesia gracilis (non Regan, 1913) | Poecilia sphenops | 81932 |
| Mollienesia gracilis Regan, 1913 | Poecilia petenensis | 84929 |
| Poecilia gracilis Valenciennes, 1846 | Cnesterodon decemmaculatus | 50894 |
| Procatopus gracilis Clausen, 1959 | Procatopus aberrans | 3788 |
| Tomeurus gracilis Eigenmann, 1909 | Tomeurus gracilis | 26130 |
| Xiphophorus gracilis Heckel, 1848 | Poeciliopsis gracilis | 12965 |
| Scolichthys greenwayi Rosen, 1967 | Scolichthys greenwayi | 26130 |
| Limia grossidens Rivas, 1980 | Limia grossidens | 50894 |
| Xiphophorus guentheri Jordan & Evermann, 1896 | Xiphophorus hellerii | 26130 |
| Xiphophorus guntheri Jordan & Evermann, 1896 | Xiphophorus hellerii | 27116 |
| Girardinus guppii Günther, 1866 | Poecilia reticulata | 2037 |
| Phalloceros harpagos Lucinda, 2008 | Phalloceros harpagos | 76852 |
| Brachyrhaphis hartwegi Rosen & Bailey, 1963 | Brachyrhaphis hartwegi | 50894 |
| Heterandria hasemani Henn, 1916 | Pamphorichthys hasemani | 26130 |
| Gambusia heckeli Bleeker, 1860 | Poeciliopsis gracilis | 27116 |
| Xiphophorus helleri alvarezi Rosen, 1960 | Xiphophorus alvarezi | 26130 |
| Xiphophorus helleri signum Rosen & Kallman, 1969 | Xiphophorus signum | 26130 |
| Xiphophorus hellerii Heckel, 1848 | Xiphophorus hellerii | 33390 |
| Xiphophorus hellerii guentheri Jordan & Evermann, 1896 | Xiphophorus hellerii | 26130 |
| Phalloceros heptaktinos Lucinda, 2008 | Phalloceros heptaktinos | 76852 |
| Priapichthys hesperis Hubbs, 1924 | Priapichthys annectens | 27116 |
| Brachyrhaphis hessfeldi Meyer & Etzel, 2001 | Brachyrhaphis hessfeldi | 42985 |
| Limia heterandria Regan, 1913 | Limia heterandria | 50894 |
| Poecilia heteristia Regan, 1909 | Micropoecilia branneri | 50894 |
| Gambusia heterochir Hubbs, 1957 | Gambusia heterochir | 3814 |
| Gambusia hispaniolae Fink, 1971 | Gambusia hispaniolae | 50894 |
| Poecilia hispaniolana Rivas, 1978 | Poecilia hispaniolana | 13498 |
| Poeciliopsis hnilickai Meyer & Vogel, 1981 | Poeciliopsis hnilickai | 26130 |
| Neopoecilia holacanthus Hubbs, 1924 | Poecilia vivipara | 27116 |
| Gambusia holbrooki Girard, 1859 | Gambusia holbrooki | 1672 |
| Brachyrhaphis holdridgei Bussing, 1967 | Brachyrhaphis holdridgei | 50894 |
| Limia hollandi Henn, 1916 | Pamphorichthys hollandi | 26130 |
| Cnesterodon holopteros Lucinda, Litz & Recuero, 2006 | Cnesterodon holopteros | 57726 |
| Poecilia hondurensis Poeser, 2011 | Poecilia hondurensis | 87955 |
| Gambusia howelli Rivas, 1944 | Gambusia puncticulata | 50894 |
| Gambusia hubbsi Breder, 1934 | Gambusia puncticulata | 50894 |
| Priapichthys huberi Fowler, 1923 | Alfaro huberi | 26130 |
| Gambusia humilis Günther, 1866 | Gambusia affinis | 50894 |
| Gambusia hurtadoi Hubbs & Springer, 1957 | Gambusia hurtadoi | 50894 |
| Haplochilus hutereaui (non Boulenger, 1913) | Poropanchax normani | 3788 |
| Haplochilus hutereaui Boulenger, 1913 | Micropanchax hutereaui | 3788 |
| Cnesterodon hypselurus Lucinda & Garavello, 2001 | Cnesterodon hypselurus | 50894 |
| Cnesterodon iguape Lucinda, 2005 | Cnesterodon iguape | 57154 |
| Girardinus iheringii Boulenger, 1889 | Phalloptychus januarius | 26130 |
| Limia immaculata Rivas, 1980 | Limia immaculata | 50894 |
| Gambusia infans (non Woolman, 1894) | Poeciliopsis balsas | 26130 |
| Gambusia infans Woolman, 1894 | Poeciliopsis infans | 26130 |
| Priapella intermedia Álvarez & Carranza, 1952 | Priapella intermedia | 26855 |
| Zygonectes inurus Jordan & Gilbert, 1882 | Gambusia affinis | 50894 |
| Scolichthys iota Rosen, 1967 | Scolichthys iota | 26130 |
| Poeciliopsis isthmensis Regan, 1913 | Phallichthys amates | 50894 |
| Xiphophorus jalapae Meek, 1902 | Xiphophorus hellerii | 26130 |
| Girardinus januarius Hensel, 1868 | Phalloptychus januarius | 26130 |
| Haplochilichthys jeanneli Pellegrin, 1935 | Lacustricola jeanneli | 3788 |
| Hypsopanchax jobaerti Poll & Lambert, 1965 | Hypsopanchax jobaerti | 3788 |
| Haplochilus johnstoni Günther, 1894 | Micropanchax johnstoni | 3788 |
| Mollienesia jonesii Günther, 1874 | Heterandria jonesii | 26130 |
| Hypsopanchax jubbi Poll & Lambert, 1965 | Hypsopanchax jubbi | 7248 |
| Phallotorynus jucundus Ihering, 1930 | Phallotorynus jucundus | 50894 |
| Aplocheilichthys kabae Daget, 1962 | Rhexipanchax kabae | 57259 |
| Xiphophorus kallmani Meyer & Schartl, 2003 | Xiphophorus kallmani | 57689 |
| Aplocheilichthys kassenjiensis Ahl, 1924 | Lacustricola kassenjiensis | 30546 |
| Haplochilus katangae Boulenger, 1912 | Lacustricola katangae | 3788 |
| Aplocheilichthys keilhacki Ahl, 1928 | Micropanchax keilhacki | 52760 |
| Poecilia kempkesi Poeser, 2013 | Poecilia kempkesi | 93319 |
| Allophallus kidderi Hubbs, 1936 | Carlhubbsia kidderi | 26130 |
| Haplochilus kingii Boulenger, 1913 | Micropanchax kingii | 3788 |
| Haplochilichthys kongoranensis Ahl, 1924 | Lacustricola kongoranensis | 3788 |
| Poecilia koperi Poeser, 2003 | Poecilia koperi | 50838 |
| Xiphophorus kosszanderi Meyer & Wischnath, 1981 | Xiphophorus kosszanderi | 50894 |
| Gambusia krumholzi Minckley, 1963 | Gambusia krumholzi | 50894 |
| Poecilia kykesis Poeser, 2002 | Poecilia kykesis | 84929 |
| Priapella lacandonae Meyer, Schories & Schartl, 2011 | Priapella lacandonae | 87322 |
| Procatopus lacustris Trewavas, 1974 | Procatopus similis | 7372 |
| Aplocheilichthys lamberti Daget, 1962 | Rhexipanchax lamberti | 3788 |
| Glaridodon latidens Garman, 1895 | Poeciliopsis latidens | 26130 |
| Mollienesia latipinna Lesueur, 1821 | Poecilia latipinna | 6096 |
| Gambusia latipunctata Meek & Hildebrand, 1913 | Brachyrhaphis episcopi | 26130 |
| Poecilia latipunctata Meek, 1904 | Poecilia latipunctata | 26130 |
| Hylopanchax leki van der Zee, Sonnenberg & Schliewen, 2013 | Hylopanchax leki | 94189 |
| Gambusia lemaitrei Fowler, 1950 | Gambusia lemaitrei | 26130 |
| Phalloceros leptokeras Lucinda, 2008 | Phalloceros leptokeras | 76852 |
| Phalloceros leticiae Lucinda, 2008 | Phalloceros leticiae | 76852 |
| Priapichthys letonai Hildebrand, 1925 | Poeciliopsis gracilis | 27116 |
| Poecilia limantouri Jordan & Snyder, 1899 | Poecilia mexicana | 26282 |
| Poecilia lineolata Girard, 1858 | Poecilia latipinna | 27116 |
| Heterandria litoperas Rosen & Bailey, 1979 | Heterandria litoperas | 26130 |
| Haplochilus loemensis (non Pellegrin, 1924) | Plataplochilus terveri | 3788 |
| Haplochilus loemensis Pellegrin, 1924 | Plataplochilus loemensis | 42871 |
| Aplocheilichthys longicauda Blache & Miton, 1960 | Micropanchax pfaffi | 3788 |
| Gambusia longispinis Minckley, 1962 | Gambusia longispinis | 50894 |
| Haplochilichthys lualabaensis Poll, 1938 | Lacustricola lualabaensis | 3788 |
| Phalloceros lucenorum Lucinda, 2008 | Phalloceros lucenorum | 76852 |
| Poeciliopsis lucida Miller, 1960 | Poeciliopsis lucida | 26130 |
| Aplocheilus luluae Fowler, 1930 | Lacustricola katangae | 47311 |
| Gambusia luma Rosen & Bailey, 1963 | Gambusia luma | 50894 |
| Heterandria lutzi Meek, 1902 | Poeciliopsis lutzi | 26282 |
| Fundulopanchax luxophthalmus Brüning, 1929 | Poropanchax luxophthalmus | 42871 |
| Aplocheilichthys macrophthalmus (non Meinken, 1932) | Micropanchax scheeli | 3788 |
| Aplocheilichthys macrophthalmus (non Meinken, 1932) | Poropanchax rancureli | 3788 |
| Aplocheilichthys macrophthalmus Meinken, 1932 | Poropanchax luxophthalmus | 113448 |
| Aplocheilichthys macrophthalmus hannerzi Scheel, 1968 | Poropanchax luxophthalmus | 57259 |
| Aplocheilichthys macrophthalmus scheeli Roman, 1971 | Micropanchax scheeli | 3788 |
| Haplochilus macrurus (non Boulenger, 1904) | Aplocheilichthys spilauchen | 3788 |
| Haplochilus macrurus (non Boulenger, 1904) | Rhexipanchax schioetzi | 3788 |
| Haplochilus macrurus Boulenger, 1904 | Lacustricola macrurus | 3788 |
| Haplochilus macrurus (non Boulenger, 1904) | Poropanchax normani | 3788 |
| Micropanchax macrurus manni Schultz, 1942 | Poropanchax normani | 3788 |
| Aplocheilichthys maculatus Klausewitz, 1957 | Lacustricola maculatus | 30546 |
| Platypoecilus maculatus Günther, 1866 | Xiphophorus maculatus | 33390 |
| Platypoecilus maculatus aurata Stoye, 1935 | Xiphophorus maculatus | 27116 |
| Platypoecilus maculatus cyanellus Meinken, 1935 | Xiphophorus maculatus | 27116 |
| Aplocheilichthys maculatus lacustris Seegers, 1984 | Lacustricola lacustris | 27139 |
| Platypoecilus maculatus sanguinea Stoye, 1935 | Xiphophorus maculatus | 27116 |
| Poeciliopsis maculifer Fowler, 1916 | Xenophallus umbratilis | 9370 |
| Oryzias madagascariensis Arnoult, 1963 | Pantanodon madagascariensis | 3788 |
| Phalloceros malabarbai Lucinda, 2008 | Phalloceros malabarbai | 76852 |
| Xiphophorus malinche Rauchenberger, Kallman & Morizot, 1990 | Xiphophorus malinche | 26855 |
| Gambusia manni Hubbs, 1927 | Gambusia manni | 50894 |
| Poecilia marcellinoi Poeser, 1995 | Poecilia marcellinoi | 42987 |
| Gambusia marshi Minckley & Craddock, 1962 | Gambusia marshi | 50894 |
| Limia matamorensis Girard, 1859 | Poecilia latipinna | 27116 |
| Aplocheilichthys matthesi Seegers, 1996 | Lacustricola matthesi | 30546 |
| Xiphophorus mayae Meyer & Schartl, 2002 | Xiphophorus mayae | 42936 |
| Poecilia maylandi Meyer, 1983 | Poecilia maylandi | 26130 |
| Gambusia mcnieli Fowler, 1916 | Gambusia nicaraguensis | 30838 |
| Poecilia mechthildae Meyer, Etzel & Bork, 2002 | Poecilia mechthildae | 50838 |
| Aplocheilichthys mediolateralis Poll, 1967 | Lacustricola mediolateralis | 30546 |
| Phalloceros megapolos Lucinda, 2008 | Phalloceros megapolos | 76852 |
| Poecilia melanogaster Günther, 1866 | Limia melanogaster | 50894 |
| Limia melanonotata Nichols & Myers, 1923 | Limia melanonotata | 50894 |
| Haplochilus melanops Cope, 1870 | Gambusia affinis | 50894 |
| Gambusia melanosticta Regan, 1913 | Gambusia puncticulata | 50894 |
| Acanthophacelus melanzonus Eigenmann, 1909 | Poecilia parae | 50894 |
| Poecilia melapleura Gosse, 1851 | Gambusia melapleura | 50894 |
| Platypoecilus mentalis Gill, 1877 | Poecilia sphenops | 27116 |
| Girardinus metallicus Poey, 1854 | Girardinus metallicus | 13498 |
| Poecilia mexicana Steindachner, 1863 | Poecilia mexicana | 3814 |
| Aplocheilichthys meyburgi Meinken, 1971 | Lacustricola bukobanus | 47311 |
| Xiphophorus meyeri Schartl & Schröder, 1988 | Xiphophorus meyeri | 50894 |
| Girardinus microdactylus Rivas, 1944 | Girardinus microdactylus | 13498 |
| Aplocheilichthys micrurus Ahl, 1928 | Plataplochilus cabindae | 3788 |
| Phalloceros mikrommatos Lucinda, 2008 | Phalloceros mikrommatos | 76852 |
| Heterophallus milleri Radda, 1987 | Heterophallus milleri | 52299 |
| Xiphophorus milleri Rosen, 1960 | Xiphophorus milleri | 26855 |
| Plataplochilus miltotaenia Lambert, 1963 | Plataplochilus miltotaenia | 27139 |
| Plataplochilus mimus Lambert, 1967 | Plataplochilus ngaensis | 59344 |
| Poecilia minima Costa & Sarraf, 1997 | Micropoecilia minima | 26655 |
| Heterandria minor Garman, 1895 | Pamphorichthys minor | 26130 |
| Limia miragoanensis Rivas, 1980 | Limia miragoanensis | 13498 |
| Xiphophorus mixei Kallman, Walter, Morizot & Kazianis, 2004 | Xiphophorus mixei | 52914 |
| Gambusia modesta Troschel, 1865 | Poecilia sphenops | 27116 |
| Gambusia modesta Ahl, 1923 | Gambusia myersi | 50894 |
| Haplochilus modestus Pappenheim, 1914 | Platypanchax modestus | 42871 |
| Haplochilus moeruensis Boulenger, 1914 | Lacustricola moeruensis | 3788 |
| Hylopanchax moke van der Zee, Sonnenberg & Schliewen, 2013 | Hylopanchax moke | 94189 |
| Poeciliopsis monacha Miller, 1960 | Poeciliopsis monacha | 50894 |
| Aplocheilichthys monikae Berkenkamp & Etzel, 1976 | Rhexipanchax schioetzi | 3788 |
| Poecilia montana Rosen & Bailey, 1963 | Poecilia dominicensis | 86697 |
| Xiphophorus montezumae Jordan & Snyder, 1899 | Xiphophorus montezumae | 26855 |
| Xiphophorus montezumae (non Jordan & Snyder, 1899) | Xiphophorus nezahualcoyotl | 26130 |
| Xiphophorus montezumae birchmanni Lechner & Radda, 1987 | Xiphophorus birchmanni | 26130 |
| Xiphophorus montezumae cortezi Rosen, 1960 | Xiphophorus cortezi | 26130 |
| Xiphophorus monticolus Kallman, Walter, Morizot & Kazianis, 2004 | Xiphophorus monticolus | 52914 |
| Poecilia multilineata Lesueur, 1821 | Poecilia latipinna | 27116 |
| Xiphophorus multilineatus Rauchenberger, Kallman & Morizot, 1990 | Xiphophorus multilineatus | 26855 |
| Haplochilus myaposae Boulenger, 1908 | Lacustricola myaposae | 3788 |
| Aplocheilichthys myersi (non Poll, 1952) | Poropanchax brichardi | 3788 |
| Aplocheilichthys myersi Poll, 1952 | Poropanchax myersi | 30546 |
| Gambusia myersi (non Ahl, 1925) | Gambusia aurata | 26130 |
| Gambusia myersi Ahl, 1925 | Gambusia myersi | 50894 |
| Hylopanchax ndeko van der Zee, Sonnenberg & Schliewen, 2013 | Hylopanchax ndeko | 94189 |
| Platypoecilus nelsoni Meek, 1904 | Poecilia sphenops | 27116 |
| Xiphophorus nezahualcoyotl Rauchenberger, Kallman & Morizot, 1990 | Xiphophorus nezahualcoyotl | 26130 |
| Haplochilichthys ngaensis Ahl, 1924 | Plataplochilus ngaensis | 3788 |
| Gambusia nicaraguensis Günther, 1866 | Gambusia nicaraguensis | 50894 |
| Gambusia nicaraguensis sexradiatus Hubbs, 1936 | Gambusia sexradiata | 30499 |
| Limia nicholsi Myers, 1931 | Poecilia nicholsi | 27116 |
| Platypoecilus nigra Brind, 1914 | Xiphophorus maculatus | 27116 |
| Limia nigrofasciata Regan, 1913 | Limia nigrofasciata | 13498 |
| Aplocheilichthys nigrolateralis Poll, 1967 | Lacustricola nigrolateralis | 30546 |
| Procatopus nigromarginatus Clausen, 1959 | Procatopus aberrans | 7372 |
| Gambusia nigropunctata Regan, 1913 | Gambusia puncticulata | 50894 |
| Gambusia nigroventralis Eigenmann & Henn, 1912 | Priapichthys nigroventralis | 50894 |
| Heterandria nobilis Baird & Girard, 1853 | Gambusia nobilis | 12965 |
| Aplocheilichthys normani (non Ahl, 1928) | Micropanchax camerunensis | 3788 |
| Aplocheilichthys normani Ahl, 1928 | Poropanchax normani | 57259 |
| Procatopus nototaenia Boulenger, 1904 | Procatopus nototaenia | 3788 |
| Procatopus nototaenia (non Boulenger, 1904) | Procatopus aberrans | 3788 |
| Heterandria obliqua Rosen, 1979 | Pseudoxiphophorus obliquus | 92353 |
| Poecilia obscura Schories, Meyer & Schartl, 2009 | Poecilia obscura | 82825 |
| Fluviphylax obscurus Costa, 1996 | Fluviphylax obscurus | 50894 |
| Heterandria occidentalis Baird & Girard, 1853 | Poeciliopsis occidentalis | 12965 |
| Phalloceros ocellatus Lucinda, 2008 | Phalloceros ocellatus | 76852 |
| Gambusia oligosticta Regan, 1913 | Gambusia puncticulata | 50894 |
| Priapella olmecae Meyer & Espinosa Pérez, 1990 | Priapella olmecae | 26130 |
| Priapichthys olomina (non Meek, 1914) | Brachyrhaphis rhabdophora | 36880 |
| Priapichthys olomina Meek, 1914 | Brachyrhaphis olomina | 36880 |
| Aplocheilichthys omoculatus Wildekamp, 1977 | Lacustricola omoculatus | 30546 |
| Cnesterodon omorgmatos Lucinda & Garavello, 2001 | Cnesterodon omorgmatos | 50894 |
| Limia ornata Regan, 1913 | Limia ornata | 13498 |
| Poecilia orri Fowler, 1943 | Poecilia orri | 50894 |
| Fluviphylax palikur Costa & Le Bail, 1999 | Fluviphylax palikur | 33375 |
| Priapichthys panamensis Meek & Hildebrand, 1916 | Priapichthys panamensis | 50894 |
| Phallotorynus pankalos Lucinda, Rosa & Reis, 2005 | Phallotorynus pankalos | 56059 |
| Gambusia panuco Hubbs, 1926 | Gambusia panuco | 50894 |
| Gambusia parismina Meek, 1912 | Brachyrhaphis parismina | 26130 |
| Lembesseia parvianalis Fowler, 1949 | Poecilia sphenops | 27116 |
| Heterandria patruelis Baird & Girard, 1853 | Gambusia affinis | 50894 |
| Poeciliopsis paucimaculata Bussing, 1967 | Poeciliopsis paucimaculata | 26130 |
| Limia pauciradiata Rivas, 1980 | Limia pauciradiata | 13498 |
| Pseudoxiphophorus pauciradiatus Regan, 1904 | Heterandria bimaculata | 50894 |
| Hylopanchax paucisquamatus Sonnenberg, Friel & Van der Zee, 2014 | Hylopanchax paucisquamatus | 96960 |
| Limia pavonina Poey, 1876 | Limia vittata | 50894 |
| Haplochilichthys pelagicus Worthington, 1932 | Laciris pelagicus | 3788 |
| Phalloceros pellos Lucinda, 2008 | Phalloceros pellos | 76852 |
| Pamphorichthys pertapeh Figueiredo, 2008 | Pamphorichthys pertapeh | 79603 |
| Platypoecilus perugiae Evermann & Clark, 1906 | Limia perugiae | 50894 |
| Mollienesia petenensis Günther, 1866 | Poecilia kykesis | 84929 |
| Poecilia petenensis Günther, 1866 | Poecilia petenensis | 26855 |
| Aplocheilichthys pfaffi (non Daget, 1954) | Micropanchax bracheti | 3788 |
| Aplocheilichthys pfaffi Daget, 1954 | Micropanchax pfaffi | 57259 |
| Aplocheilichthys pfefferi Ahl, 1924 | Lacustricola vitschumbaensis | 47311 |
| Poecilia picta Regan, 1913 | Micropoecilia picta | 50894 |
| Gambusia picturada Poey, 1868 | Gambusia puncticulata | 50894 |
| Cnesterodon pirai Aguilera, Mirande & Azpelicueta, 2009 | Cnesterodon pirai | 82179 |
| Poecilia pittieri Meek, 1912 | Phallichthys amates | 50894 |
| Haplochilus platysternus Nichols & Griscom, 1917 | Hypsopanchax platysternus | 3788 |
| Girardinus pleurospilus (non Günther, 1866) | Poeciliopsis gracilis | 27116 |
| Girardinus pleurospilus Günther, 1866 | Poeciliopsis pleurospilus | 54621 |
| Gambusia plumbea Troschel, 1865 | Poecilia sphenops | 27116 |
| Procatopus plumosus Clausen, 1959 | Procatopus aberrans | 27139 |
| Pantanodon podoxys Myers, 1955 | Pantanodon stuhlmanni | 31267 |
| Lebistes poecilioides De Filippi, 1861 | Poecilia reticulata | 27116 |
| Limia poeciloides Girard, 1858 | Poecilia latipinna | 27116 |
| Poeciliopsis porosus de Buen, 1943 | Poeciliopsis infans | 26130 |
| Poecilia presidionis Jordan & Culver, 1895 | Poeciliopsis presidionis | 26130 |
| Poeciliopsis prolifica Miller, 1960 | Poeciliopsis prolifica | 26130 |
| Gambusia pseudopunctata Rivas, 1969 | Gambusia pseudopunctata | 50894 |
| Phallotorynus psittakos Lucinda, Rosa & Reis, 2005 | Phallotorynus psittakos | 56059 |
| Priapichthys puetzi Meyer & Etzel, 1996 | Priapichthys puetzi | 42984 |
| Plataplochilus pulcher Lambert, 1967 | Plataplochilus miltotaenia | 59344 |
| Platypoecilus pulchra Brind, 1914 | Xiphophorus maculatus | 27116 |
| Haplochilus pumilus Boulenger, 1906 | Lacustricola pumilus | 3788 |
| Gambusia punctata Poey, 1854 | Gambusia punctata | 13498 |
| Gambusia puncticulata Poey, 1854 | Gambusia puncticulata | 50894 |
| Trigonophallus punctifer Hubbs, 1926 | Brachyrhaphis punctifer | 26130 |
| Gambusia punctulata monticola Rivas, 1971 | Gambusia monticola | 50894 |
| Girardinus pygmaeus Rivas, 1944 | Girardinus metallicus | 50894 |
| Potamophylax pygmaeus Myers & Carvalho, 1955 | Fluviphylax pygmaeus | 50894 |
| Xiphophorus pygmaeus Hubbs & Gordon, 1943 | Xiphophorus pygmaeus | 4537 |
| Xiphophorus pygmaeus nigrensis Rosen, 1960 | Xiphophorus nigrensis | 26130 |
| Phallichthys quadripunctatus Bussing, 1979 | Phallichthys quadripunctatus | 26130 |
| Gambusia quadruncus Langerhans, 2012 | Gambusia quadruncus | 91760 |
| Heterophallus rachovii Regan, 1914 | Heterophallus rachovii | 52299 |
| Xiphophorus rachovii Regan, 1911 | Xiphophorus hellerii | 26130 |
| Cnesterodon raddai Meyer & Etzel, 2001 | Cnesterodon raddai | 50894 |
| Dactylophallus ramsdeni Rivas, 1944 | Girardinus denticulatus | 50894 |
| Aplocheilichthys rancureli Daget, 1965 | Poropanchax rancureli | 57259 |
| Gambusia regani Hubbs, 1926 | Gambusia regani | 50894 |
| Phalloceros reisi Lucinda, 2008 | Phalloceros reisi | 76852 |
| Poecilia reticulata Peters, 1859 | Poecilia reticulata | 3814 |
| Pseudoxiphophorus reticulatus Troschel, 1865 | Heterandria bimaculata | 50894 |
| Poecilia retropinna Regan, 1908 | Poeciliopsis retropinna | 26130 |
| Gambusia rhabdophora Regan, 1908 | Brachyrhaphis rhabdophora | 26130 |
| Gambusia rhizophorae Rivas, 1969 | Gambusia rhizophorae | 50894 |
| Toxus riddlei Eigenmann, 1903 | Girardinus creolus | 50894 |
| Limia rivasi Franz & Burgess, 1983 | Limia rivasi | 26855 |
| Procatopus roseipinnis Clausen, 1959 | Procatopus aberrans | 7372 |
| Brachyrhaphis roseni Bussing, 1988 | Brachyrhaphis roseni | 50894 |
| Xiphophorus roseni Meyer & Wischnath, 1981 | Xiphophorus roseni | 50894 |
| Poecilia rositae Meyer, Schneider, Radda, Wilde & Schartl, 2004 | Poecilia rositae | 75917 |
| Brachyrhaphis roswithae Meyer & Etzel, 1998 | Brachyrhaphis roswithae | 42972 |
| Platypoecilus rubra Brind, 1914 | Xiphophorus maculatus | 27116 |
| Haplochilichthys rudolfianus Worthington, 1932 | Micropanchax rudolfianus | 3788 |
| Poecilia salvatoris Regan, 1907 | Poecilia salvatoris | 42987 |
| Platypoecilus sanguinea Stoye, 1935 | Xiphophorus maculatus | 27116 |
| Poeciliopsis santaelena Bussing, 2008 | Poeciliopsis santaelena | 78743 |
| Poecilia sarrafae Bragança & Costa, 2011 | Poecilia sarrafae | 86528 |
| Cnesterodon scalpridens Garman, 1895 | Pamphorichthys scalpridens | 26130 |
| Poeciliopsis scarlli Meyer, Riehl, Dawes & Dibble, 1985 | Poeciliopsis scarlli | 26130 |
| Aplocheilichthys schalleri Scheel & Radda, 1974 | Micropanchax hutereaui | 47311 |
| Aplocheilichthys schioetzi Scheel, 1968 | Rhexipanchax schioetzi | 30546 |
| Poecilia schneideri Valenciennes, 1821 | Poecilia vivipara | 27116 |
| Haplochilus schoelleri Boulenger, 1904 | Micropanchax loati | 3788 |
| Gambusia senilis Girard, 1859 | Gambusia senilis | 5723 |
| Gambusia senilis (non Girard, 1859) | Gambusia marshi | 12960 |
| Cnesterodon septentrionalis Rosa & Costa, 1993 | Cnesterodon septentrionalis | 30833 |
| Toxus serripenis Rivas, 1958 | Girardinus creolus | 30837 |
| Hypsopanchax silvestris Poll & Lambert, 1958 | Hylopanchax silvestris | 40966 |
| Procatopus similis Ahl, 1927 | Procatopus similis | 3788 |
| Fluviphylax simplex Costa, 1996 | Fluviphylax simplex | 26652 |
| Girardinus sonoriensis (non Girard, 1859) | Poeciliopsis occidentalis | 81264 |
| Girardinus sonoriensis Girard, 1859 | Poeciliopsis sonoriensis | 6466 |
| Gambusia speciosa Girard, 1859 | Gambusia speciosa | 50894 |
| Poecilia sphenops (non Valenciennes, 1846) | Poecilia mexicana | 27297 |
| Poecilia sphenops Valenciennes, 1846 | Poecilia sphenops | 26130 |
| Mollienesia sphenops altissima Hubbs, 1936 | Poecilia sphenops | 27116 |
| Mollienesia sphenops macrura Hubbs, 1935 | Poecilia sphenops | 27116 |
| Mollienesia sphenops pallida de Buen, 1943 | Poecilia sphenops | 27116 |
| Mollienesia sphenops vantynei Hubbs, 1935 | Poecilia sphenops | 27116 |
| Poecilia spilargyreia (non Duméril, 1861) | Aplocheilichthys spilauchen | 3788 |
| Poecilia spilonota Regan, 1908 | Poecilia sphenops | 27116 |
| Phalloceros spiloura Lucinda, 2008 | Phalloceros spiloura | 76852 |
| Poecilia spilurus Günther, 1866 | Poecilia sphenops | 27116 |
| Hypsopanchax stiassnyae van der Zee, Sonnenberg & Mbimbi Mayi Munene, 2015 | Hypsopanchax stiassnyae | 103403 |
| Epiplatys stictopleuron Fowler, 1949 | Hylopanchax stictopleuron | 3788 |
| Poropanchax stigmatopygus Wildekamp & Malumbres, 2004 | Poropanchax stigmatopygus | 52760 |
| Xiphophorus strigatus Regan, 1907 | Xiphophorus hellerii | 26130 |
| Carlhubbsia stuarti Rosen & Bailey, 1959 | Carlhubbsia stuarti | 50894 |
| Haplochilichthys stuhlmanni Ahl, 1924 | Pantanodon stuhlmanni | 3788 |
| Mollienesia sulphuraria Álvarez, 1948 | Poecilia sulphuraria | 26282 |
| Limia sulphurophila Rivas, 1980 | Limia sulphurophila | 26855 |
| Poecilia surinamensis Valenciennes, 1821 | Poecilia vivipara | 27116 |
| Haplochilus tanganicanus Boulenger, 1898 | Lamprichthys tanganicanus | 3788 |
| Poecilia tenuis Meek, 1907 | Poecilia sphenops | 27116 |
| Poecilia teresae Greenfield, 1990 | Poecilia teresae | 26855 |
| Aplocheilichthys terofali Berkenkamp & Etzel, 1981 | Rhexipanchax schioetzi | 7372 |
| Gambusia terrabensis Regan, 1907 | Brachyrhaphis terrabensis | 26130 |
| Procatopus terveri Huber, 1981 | Plataplochilus terveri | 3788 |
| Poecilia thermalis Steindachner, 1863 | Poecilia sphenops | 27116 |
| Phallichthys tico Bussing, 1963 | Phallichthys tico | 26130 |
| Phalloceros titthos Lucinda, 2008 | Phalloceros titthos | 76852 |
| Glaridichthys torralbasi Eigenmann, 1903 | Girardinus uninotatus | 50894 |
| Poecilia tridens Hilgendorf, 1889 | Limia tridens | 50894 |
| Gambusia tridentiger Garman, 1895 | Neoheterandria tridentiger | 26130 |
| Panamichthys tristani Fowler, 1932 | Brachyrhaphis rhabdophora | 26130 |
| Platypoecilus tropicus Meek, 1907 | Poecilia sphenops | 27116 |
| Aplocheilichthys tschiloangensis Ahl, 1928 | Aplocheilichthys spilauchen | 3788 |
| Phalloceros tupinamba Lucinda, 2008 | Phalloceros tupinamba | 76852 |
| Poeciliopsis turneri Miller, 1975 | Poeciliopsis turneri | 26130 |
| Gambusia turrubarensis Meek, 1912 | Poeciliopsis turrubarensis | 12965 |
| Heterandria tuxtlaensis McEachran & Dewitt, 2008 | Heterandria tuxtlaensis | 77058 |
| Aplocheilichthys typus Bleeker, 1863 | Aplocheilichthys spilauchen | 3788 |
| Phalloceros uai Lucinda, 2008 | Phalloceros uai | 76852 |
| Gambusia umbratilis Meek, 1912 | Xenophallus umbratilis | 50894 |
| Poecilia unimaculata Valenciennes, 1821 | Poecilia vivipara | 27116 |
| Girardinus uninotatus Poey, 1860 | Girardinus uninotatus | 50894 |
| Aplocheilichthys usanguensis Wildekamp, 1977 | Lacustricola usanguensis | 30546 |
| Poecilia vandepolli Van Lidth de Jeude, 1887 | Poecilia vandepolli | 26855 |
| Poecilia vandepolli arubensis van Lidth de Jeude, 1887 | Poecilia sphenops | 27116 |
| Aplocheilichthys vanderbilti Fowler, 1936 | Lacustricola vitschumbaensis | 47311 |
| Platypoecilus variatus Meek, 1904 | Xiphophorus variatus | 12965 |
| Xiphophorus variatus evelynae Rosen, 1960 | Xiphophorus evelynae | 26282 |
| Mollienesia velifera Regan, 1914 | Poecilia velifera | 26282 |
| Girardinus versicolor Günther, 1866 | Limia versicolor | 50894 |
| Poecilia vetiprovidentiae Fowler, 1950 | Poecilia sphenops | 27116 |
| Phallotorynus victoriae Oliveros, 1983 | Phallotorynus victoriae | 50894 |
| Poeciliopsis viriosa Miller, 1960 | Poeciliopsis viriosa | 26130 |
| Gambusia vittata Hubbs, 1926 | Gambusia vittata | 50894 |
| Poecilia vittata Guichenot, 1853 | Limia vittata | 13498 |
| Poecilia vivipara Bloch & Schneider, 1801 | Poecilia vivipara | 26728 |
| Poecilia vivipara parae Eigenmann, 1894 | Poecilia parae | 26130 |
| Poecilia waiapi Bragança, Costa & Gama, 2012 | Poecilia waiapi | 89070 |
| Poecilia wandae Poeser, 2003 | Poecilia wandae | 50838 |
| Procatopus websteri Huber, 2007 | Aapticheilichthys websteri | 113375 |
| Poecilia wingei Poeser, Kempkes & Isbrücker, 2005 | Poecilia wingei | 57924 |
| Gambusia wrayi Regan, 1913 | Gambusia wrayi | 50894 |
| Gambusia xanthosoma Greenfield, 1983 | Gambusia xanthosoma | 50894 |
| Platypoecilus xiphidium Gordon, 1932 | Xiphophorus xiphidium | 26130 |
| Limia yaguajali Rivas, 1980 | Limia yaguajali | 13498 |
| Gambusia yucatana Regan, 1914 | Gambusia yucatana | 50894 |
| Gambusia yucatana australis Greenfield, 1985 | Gambusia yucatana | 50894 |
| Gambusia zarskei Meyer, Schories & Schartl, 2010 | Gambusia zarskei | 84135 |
| Haplochilus zebra Pellegrin, 1929 | Hypsopanchax zebra | 3788 |
| Heterandria zonata Nichols, 1915 | Limia zonata | 50894 |
| Fluviphylax zonatus Costa, 1996 | Fluviphylax zonatus | 26652 |