| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Aatolana Bruce 1993 | 1 | 0 | 0 |
| Aatolana schioedtei (Miers 1884) | 0 | 0 | 1 |
| Abalistes (Starry Triggerfishes) | 1 | 0 | 0 |
| Abalistes stellatus (Anonymous 1798) (Starry triggerfish) | 0 | 0 | 1 |
| Abdopus Norman & Finn 2001 (Indo-Pacific Longarm Octopuses) | 1 | 0 | 0 |
| Abdopus horridus (d'Orbigny 1826) (Red Sea octopus) | 0 | 0 | 2 |
| Aberrapecidae | 1 | 0 | 0 |
| Aberrapex | 1 | 0 | 0 |
| Aberrapex weipaensis Koch, Jensen & Caira 2012 | 0 | 0 | 1 |
| Ablennes | 1 | 0 | 0 |
| Ablennes hians (Valenciennes 1846) (Flat Needlefish) | 0 | 0 | 1 |
| Abralia Gray 1849 | 1 | 0 | 0 |
| Abralia (Heterabralia) andamanica Goodrich 1896 (Andaman enope squid) | 0 | 0 | 1 |
| Abralia (Astrabralia) astrosticta Berry 1909 | 0 | 0 | 1 |
| Abudefduf (Sergeant Fish) | 5 | 0 | 0 |
