| Scientific Name | Author | English Name |
|---|---|---|
| Anableps anableps | (Linnaeus, 1758) | Largescale foureyes |
| Anableps dowei | Gill, 1861 | Pacific foureyed fish |
| Anableps microlepis | Müller & Troschel, 1844 | Foureyes |
| Jenynsia alternimaculata | (Fowler, 1940) | |
| Jenynsia diphyes | Lucinda, Ghedotti & da Graça, 2006 | |
| Jenynsia eigenmanni | (Haseman, 1911) | |
| Jenynsia eirmostigma | Ghedotti & Weitzman, 1995 | |
| Jenynsia lineata | (Jenyns, 1842) | Onesided livebearer |
| Jenynsia luxata | Aguilera, Mirande, Calviño & Lobo, 2013 | |
| Jenynsia maculata | Regan, 1906 | |
| Jenynsia multidentata | (Jenyns, 1842) | Rio de la Plata onesided livebearer |
| Jenynsia obscura | (Weyenbergh, 1877) | |
| Jenynsia onca | Lucinda, Reis & Quevedo, 2002 | |
| Jenynsia sanctaecatarinae | Ghedotti & Weitzman, 1996 | |
| Jenynsia tucumana | Aguilera & Mirande, 2005 | |
| Jenynsia unitaenia | Ghedotti & Weitzman, 1995 | |
| Jenynsia weitzmani | Ghedotti, Meisner & Lucinda, 2001 | |
| Oxyzygonectes dovii | (Günther, 1866) | White-eye |