| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Hydroniscus abyssi Hansen, 1916 |
Northern Atlantic | ||
| Hydroniscus buzwilsoni George, 2004 |
Northwest Atlantic | ||
| Hydroniscus lobocephalus Lincoln, 1985 |
Southwest Pacific | ||
| Hydroniscus malyutinae George, 2004 |
Northwest Atlantic | ||
| Hydroniscus minutus Birstein, 1971 |
Northwest Pacific | ||
| Hydroniscus ornatus Menzies, 1962 |
S | ||
| Hydroniscus quadrifrons Menzies, 1962 |
Atlantic Ocean | ||
| Hydroniscus vandeli Chardy, 1974 |
Northern Atlantic | ||
| Hydroniscus vitjazi Birstein, 1963 |
Northwest Pacific | ||
| Hydroniscus watlingi George, 2004 |
Northwest Atlantic |