| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Actaea polyacantha | 0 | 0 | 1 |
| Acteonidae d'Orbigny 1842 (捻螺科) | 2 | 0 | 0 |
| Actiniaria (海葵) | 3 | 0 | 0 |
| Actiniidae Rafinesque 1815 (海葵科) | 1 | 0 | 0 |
| Plecoptera | 1 | 0 | 0 |
| Actinoposthiidae | 1 | 0 | 0 |
| Actinopterygii (輻鰭魚總綱) | 19 | 0 | 0 |
| Actinopyga Bronn 1860 (輻肛參屬) | 1 | 0 | 0 |
| Actinopyga bannwarthi Panning 1944 | 0 | 0 | 1 |
| Actitis Illiger 1811 (磯鷸屬) | 1 | 0 | 0 |
| Actitis hypoleucos (Linnaeus 1758) (磯鷸) | 0 | 0 | 1 |
| Aeoliscus (鰕魚屬) | 1 | 0 | 0 |
| Aeoliscus punctulatus (Bianconi 1854) | 0 | 0 | 1 |
| Aethaloperca | 1 | 0 | 0 |
| Aethaloperca rogaa (Forsskål 1775) (煙鱠) | 0 | 0 | 1 |
