| Scientific Name | Country | Locality | Date taken | Picture |
|---|---|---|---|---|
| Agonostomus monticola | Costa Rica | Río Corobicí, Cañas | 2006-04-26 | Agmon_f2.jpg |
| Agonostomus monticola | Costa Rica | Río Corobicí, Cañas | 2006-04-26 | Agmon_f1.jpg |
| Cribroheros diquis | Costa Rica | Parrita River | Amdiq_u0.jpg | |
| Astyanax aeneus | Costa Rica | Chachagua River | Asaen_u1.jpg | |
| Atherinella chagresi | Costa Rica | Parismina River | Atcha_u0.jpg | |
| Atherinella hubbsi | Costa Rica | Peñas Blancas River Basin, San Ramón | Athub_u0.jpg | |
| Atherinella milleri | Costa Rica | Parismina River | Atmil_u0.jpg | |
| Brachyrhaphis olomina | Costa Rica | Pirrís River | Brolo_u0.jpg | |
| Bryconamericus scleroparius | Costa Rica | Peñas Blancas River Basin, San Ramón | Brscl_u0.jpg | |
| Bryconamericus terrabensis | Costa Rica | Río General | Brter_u1.jpg | |
| Bryconamericus terrabensis | Costa Rica | Río General | Brter_u2.jpg | |
| Citharichthys uhleri | Costa Rica | Ciuhl_u0.jpg | ||
| Gymnotus cylindricus | Costa Rica | Cuenca media río Reventazón | Gycyl_u0.jpg | |
| Gymnotus maculosus | Costa Rica | Río Peñas Blancas, San Ramón de Alajuela | Gymac_u0.jpg | |
| Hyphessobrycon savagei | Costa Rica | Parrita River | Hysav_u0.jpg | |
| Parachromis loisellei | Costa Rica | Paloi_u0.jpg | ||
| Poecilia gillii | Costa Rica | Río Peñas Blancas | Pogil_u0.jpg | |
| Priapichthys annectens | Costa Rica | Peñas Blancas River Basin, San Ramón | Prann_u3.jpg | |
| Pseudophallus elcapitanensis | Costa Rica | Parrita River | Pselc_u1.jpg | |
| Pseudophallus elcapitanensis | Costa Rica | Parrita River | Pselc_u0.jpg | |
| Cynodonichthys isthmensis | Costa Rica | Río Burro, Los Angeles de la Fortuna | Riist_m0.jpg | |
| Cynodonichthys isthmensis | Costa Rica | Río Burro, Los Angeles de la Fortuna | Riist_f0.jpg | |
| Roeboides bouchellei | Costa Rica | Río Chachagua, San Ramón | Robou_u0.jpg | |
| Roeboides ilseae | Roils_u2.jpg | |||
| Sicydium altum | Costa Rica | río Reventazón | Sialt_u4.jpg | |
| Sicydium altum | Costa Rica | río Reventazón | Sialt_u3.jpg | |
| Tomocichla tuba | Costa Rica | 2005-01-11 | Totub_u2.jpg | |
| Tomocichla tuba | Costa Rica | Totub_u1.jpg |