| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Bythotiara depressa Naumov, 1960 |
Eastern Pacific | ||
| Bythotiara drygalskii Vanhoeffen, 1912 |
Antarctic Pacific | 1.1 | |
| Bythotiara huntsmani (Fraser, 1911) |
Tunicate siphon hydroid | Eastern Pacific | |
| Bythotiara murrayi Gunther, 1903 |
Southwest Pacific, Northeast Atlantic and the Mediterranean | 2 | |
| Bythotiara stilbosa Mills & Rees, 1979 |
Eastern Pacific | 0.54 |