Heniochus
| Bannerfishes | |
|---|---|
| Pennant coralfish, Heniochus acuminatus | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Actinopterygii | 
| Order: | Acanthuriformes | 
| Family: | Chaetodontidae | 
| Genus: | Heniochus G. Cuvier, 1816 | 
| Type species | |
| Chaetodon macrolepidotus Linnaeus, 1758 | |
| Synonyms | |
Heniochus is a genus of marine ray-finned fish, butterflyfishes from the family Chaetodontidae. They are native to the Indo-Pacific. Though very similar in appearance to the Moorish idol (Zanclus cornutus), the members of this genus are not closely related to it.