n = 7
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Opisthonema berlangai | Berry & Barrett, 1963 | Opisthonema berlangai | Dorosomatidae | Galapagos thread herring |
| Opisthonema bulleri | (Regan, 1904) | Opisthonema bulleri | Dorosomatidae | Slender thread herring |
| Opisthonema captivai | Rivas, 1972 | Opisthonema oglinum | Dorosomatidae | Atlantic thread herring |
| Opisthonema libertate | (Günther, 1867) | Opisthonema libertate | Dorosomatidae | Pacific thread herring |
| Opisthonema medirastre | Berry & Barrett, 1963 | Opisthonema medirastre | Dorosomatidae | Middling thread herring |
| Opisthonema oglinum | (Lesueur, 1818) | Opisthonema oglinum | Dorosomatidae | Atlantic thread herring |
| Opisthonema oglunum | (Lesueur, 1818) | Opisthonema oglinum | Dorosomatidae | Atlantic thread herring |