The Maroon Clownfish or Spinecheek Anemonefish, Premnas biaculeatus (Perciformes - Pomacentridae), is a species of clownfish that is found in the Indo-West Pacific, including the coasts of India, Burma, Thailand, Malaysia, Indonesia, Philippines, New Guinea, New Britain, Solomon Islands, Vanuatu and northern Queensland.
This species is among the easiest anemonefish to identify, even when young. They are bright red with 3 bars that are bright white in males and grey in females. Individuals may become bright white if they are provoked. The lines may also be bright yellow.