Redfin Butterflyfish
Chaetodon lunulatus
- Least concern
- Card rarity: Common
- Fish

The oval butterflyfish, red-finned butterflyfish or redfin butterflyfish, is a species of marine ray-finned fish, a butterflyfish belonging to family Chaetodontidae. It is found in the Pacific Ocean from Eastern Indonesia to the Hawaiian islands. This is one species of a closely related group which includes the blacktail butterflyfish, which is found in the Red Sea and Gulf of Aden, and the melon butterflyfish, which is found in the Indian Ocean.
Classification
- Class
- Actinopterygii
- Order
- Acanthuriformes
- Family
- Chaetodontidae
- Genus
- Chaetodon