n = 54
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Xiphophorus alvarezi | Rosen, 1960 | Xiphophorus alvarezi | Poeciliidae | Chiapas swordtail |
| Xiphophorus andersi | Meyer & Schartl, 1980 | Xiphophorus andersi | Poeciliidae | Spiketail platyfish |
| Xiphophorus bimaculatus | Heckel, 1848 | Pseudoxiphophorus bimaculatus | Poeciliidae | Twospot livebearer |
| Xiphophorus birchmani | Lechner & Radda, 1987 | Xiphophorus birchmanni | Poeciliidae | Sheepshead swordtail |
| Xiphophorus birchmanni | Lechner & Radda, 1987 | Xiphophorus birchmanni | Poeciliidae | Sheepshead swordtail |
| Xiphophorus brevis | Regan, 1907 | Xiphophorus hellerii | Poeciliidae | Green swordtail |
| Xiphophorus clemenciae | Álvarez, 1959 | Xiphophorus clemenciae | Poeciliidae | Yellow swordtail |
| Xiphophorus cochianus | (Girard, 1859) | Xiphophorus couchianus | Poeciliidae | Monterrey platyfish |
| Xiphophorus conchianus | (Girard, 1859) | Xiphophorus couchianus | Poeciliidae | Monterrey platyfish |
| Xiphophorus continens | Rauchenberger, Kallman & Morizot, 1990 | Xiphophorus continens | Poeciliidae | Short-sword platyfish |
| Xiphophorus cortezi | Rosen, 1960 | Xiphophorus cortezi | Poeciliidae | Delicate swordtail |
| Xiphophorus couchianus | (Girard, 1859) | Xiphophorus couchianus | Poeciliidae | Monterrey platyfish |
| Xiphophorus couchianus gordoni | Miller & Minckley, 1963 | Xiphophorus gordoni | Poeciliidae | Northern platyfish |
| Xiphophorus evelynae | Rosen, 1960 | Xiphophorus evelynae | Poeciliidae | Puebla platyfish |
| Xiphophorus gillii | Kner, 1863 | Poecilia gillii | Poeciliidae | Gill's molly |
| Xiphophorus gordoni | Miller & Minckley, 1963 | Xiphophorus gordoni | Poeciliidae | Northern platyfish |
| Xiphophorus gracilis | Heckel, 1848 | Poeciliopsis gracilis | Poeciliidae | Porthole livebearer |
| Xiphophorus guentheri | Jordan & Evermann, 1896 | Xiphophorus hellerii | Poeciliidae | Green swordtail |
| Xiphophorus guntheri | Jordan & Evermann, 1896 | Xiphophorus hellerii | Poeciliidae | Green swordtail |
| Xiphophorus heckelii | Weyenbergh, 1874 | Jenynsia lineata | Anablepidae | Onesided livebearer |
| Xiphophorus helleri | Heckel, 1848 | Xiphophorus hellerii | Poeciliidae | Green swordtail |
| Xiphophorus helleri alvarezi | Rosen, 1960 | Xiphophorus alvarezi | Poeciliidae | Chiapas swordtail |
| Xiphophorus helleri brevis | Regan, 1907 | Xiphophorus hellerii | Poeciliidae | Green swordtail |
| Xiphophorus helleri helleri | Heckel, 1848 | Xiphophorus hellerii | Poeciliidae | Green swordtail |
| Xiphophorus helleri signum | Rosen & Kallman, 1969 | Xiphophorus signum | Poeciliidae | |
| Xiphophorus helleri strigatus | Regan, 1907 | Xiphophorus hellerii | Poeciliidae | Green swordtail |
| Xiphophorus hellerii | Heckel, 1848 | Xiphophorus hellerii | Poeciliidae | Green swordtail |
| Xiphophorus hellerii guentheri | Jordan & Evermann, 1896 | Xiphophorus hellerii | Poeciliidae | Green swordtail |
| Xiphophorus jalapae | Meek, 1902 | Xiphophorus hellerii | Poeciliidae | Green swordtail |
| Xiphophorus kallmani | Meyer & Schartl, 2003 | Xiphophorus kallmani | Poeciliidae | |
| Xiphophorus kosszanderi | Meyer & Wischnath, 1981 | Xiphophorus kosszanderi | Poeciliidae | Chapultepec platy |
| Xiphophorus maculatus | (Günther, 1866) | Xiphophorus maculatus | Poeciliidae | Southern platyfish |
| Xiphophorus malinche | Rauchenberger, Kallman & Morizot, 1990 | Xiphophorus malinche | Poeciliidae | Highland swordtail |
| Xiphophorus mayae | Meyer & Schartl, 2002 | Xiphophorus mayae | Poeciliidae | |
| Xiphophorus meyeri | Schartl & Schröder, 1988 | Xiphophorus meyeri | Poeciliidae | Marbled swordtail |
| Xiphophorus milleri | Rosen, 1960 | Xiphophorus milleri | Poeciliidae | Catemaco platyfish |
| Xiphophorus mixei | Kallman, Walter, Morizot & Kazianis, 2004 | Xiphophorus mixei | Poeciliidae | Mixe swordtail |
| Xiphophorus montezumae | Jordan & Snyder, 1899 | Xiphophorus montezumae | Poeciliidae | Montezuma swordtail |
| Xiphophorus montezumae birchmanni | Lechner & Radda, 1987 | Xiphophorus birchmanni | Poeciliidae | Sheepshead swordtail |
| Xiphophorus montezumae cortezi | Rosen, 1960 | Xiphophorus cortezi | Poeciliidae | Delicate swordtail |
| Xiphophorus monticolus | Kallman, Walter, Morizot & Kazianis, 2004 | Xiphophorus monticolus | Poeciliidae | Southern mountain swordtail |
| Xiphophorus multilineatus | Rauchenberger, Kallman & Morizot, 1990 | Xiphophorus multilineatus | Poeciliidae | Striped swordtail |
| Xiphophorus nezahualcoyotl | Rauchenberger, Kallman & Morizot, 1990 | Xiphophorus nezahualcoyotl | Poeciliidae | Mountain swordatail |
| Xiphophorus nigrensis | Rosen, 1960 | Xiphophorus nigrensis | Poeciliidae | Panuco swordtail |
| Xiphophorus obscurus | Weyenbergh, 1877 | Jenynsia obscura | Anablepidae | Córdoba livebearer |
| Xiphophorus pygmaeus | Hubbs & Gordon, 1943 | Xiphophorus pygmaeus | Poeciliidae | Pygmy swordtail |
| Xiphophorus pygmaeus nigrensis | Rosen, 1960 | Xiphophorus nigrensis | Poeciliidae | Panuco swordtail |
| Xiphophorus rachovii | Regan, 1911 | Xiphophorus hellerii | Poeciliidae | Green swordtail |
| Xiphophorus roseni | Meyer & Wischnath, 1981 | Xiphophorus roseni | Poeciliidae | |
| Xiphophorus signum | Rosen & Kallman, 1969 | Xiphophorus signum | Poeciliidae | |
| Xiphophorus strigatus | Regan, 1907 | Xiphophorus hellerii | Poeciliidae | Green swordtail |
| Xiphophorus variatus | (Meek, 1904) | Xiphophorus variatus | Poeciliidae | Variable platyfish |
| Xiphophorus variatus evelynae | Rosen, 1960 | Xiphophorus evelynae | Poeciliidae | Puebla platyfish |
| Xiphophorus xiphidium | (Gordon, 1932) | Xiphophorus xiphidium | Poeciliidae | Swordtail platyfish |