n = 14
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Chasmocranus bleekeri | (Boeseman, 1953) | Chasmocranus bleekeri | Heptapteridae | |
| Chasmocranus brachynema | Gomes & Schubart, 1958 | Chasmocranus brachynemus | Heptapteridae | |
| Chasmocranus brachynemus | Gomes & Schubart, 1958 | Chasmocranus brachynemus | Heptapteridae | |
| Chasmocranus brevior | Eigenmann, 1912 | Chasmocranus brevior | Heptapteridae | |
| Chasmocranus chimantanus | Inger, 1956 | Chasmocranus chimantanus | Heptapteridae | |
| Chasmocranus longior | Eigenmann, 1912 | Chasmocranus longior | Heptapteridae | |
| Chasmocranus lopezae | Miranda Ribeiro, 1968 | Chasmocranus lopezae | Heptapteridae | |
| Chasmocranus lopezi | Miranda Ribeiro, 1968 | Chasmocranus lopezae | Heptapteridae | |
| Chasmocranus peruanus | Eigenmann & Pearson, 1942 | Chasmocranus peruanus | Heptapteridae | |
| Chasmocranus quadrizonatus | Pearson, 1937 | Chasmocranus quadrizonatus | Heptapteridae | |
| Chasmocranus rosae | Eigenmann, 1922 | Chasmocranus rosae | Heptapteridae | |
| Chasmocranus surinamensis | (Bleeker, 1862) | Chasmocranus surinamensis | Heptapteridae | |
| Chasmocranus tapanahoniensis | (Mees, 1967) | Chasmocranus tapanahoniensis | Heptapteridae | |
| Chasmocranus truncatorostris | Borodin, 1927 | Chasmocranus truncatorostris | Heptapteridae |