n = 6
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Quassiremus ascensionis | (Studer, 1889) | Quassiremus ascensionis | Ophichthidae | Blackspotted snake eel |
| Quassiremus evionthas | (Jordan & Bollman, 1890) | Quassiremus evionthas | Ophichthidae | Galapagos snake eel |
| Quassiremus goslingi | Beebe & Tee-Van, 1932 | Quassiremus ascensionis | Ophichthidae | Blackspotted snake eel |
| Quassiremus nothochir | (Gilbert, 1890) | Quassiremus nothochir | Ophichthidae | Smallfish snake-eel |
| Quassiremus polyclitellum | Castle, 1996 | Quassiremus polyclitellum | Ophichthidae | |
| Quassiremus productus | Seale, 1917 | Quassiremus ascensionis | Ophichthidae | Blackspotted snake eel |