Red Sea Raccoon Butterflyfish
Chaetodon fasciatus
- Least concern
- Card rarity: Common
- Fish

The diagonal butterflyfish, also known as the Red Sea raccoon butterflyfish, is a species of marine ray-finned fish, a butterflyfish belonging to the family Chaetodontidae. It is found in the Red Sea and western Indian Ocean.
Classification
- Class
- Actinopterygii
- Order
- Acanthuriformes
- Family
- Chaetodontidae
- Genus
- Chaetodon