Rainfordia
Rainfordia opercularis
- Least concern
- Card rarity: Common
- Fish

The rainfordia, also known as the flathead perch or Rainford's perch, is a species of marine ray-finned fish, related to the groupers and classified within the subfamily Epinephelinae of the family Serranidae. It is found in the eastern Indian Ocean and in the Western Pacific Ocean. It is the only species in its monotypic genus.
Classification
- Class
- Actinopterygii
- Order
- Perciformes
- Family
- Liopropomatidae
- Genus
- Rainfordia