Queen Coris
Coris Formosa
Reefs
Indian Ocean
About
Overview
The Queen coris (Coris formosa) is a striking member of the wrasse family known for its dramatic transformation in appearance as it matures. These solitary fish are widely distributed across the Western Indian Ocean, where they inhabit a variety of environments ranging from shallow tide pools to deeper reef structures.
Distribution & Habitat
This species is found throughout the Western Indian Ocean, spanning from the southern Red Sea and Oman down to South Africa, and extending eastward to Sri Lanka, the Seychelles, and the Maldives. While juveniles are commonly found in shallow, rocky tide pools, adults typically frequent coral reefs, rocky bottoms, and seagrass meadows.
Appearance
As with many wrasses, the Queen coris undergoes significant color and pattern changes throughout its life. Juveniles are orange with distinct black-edged white saddles along their backs. Females display a greenish body with black spots and a characteristic vertical red band at the base of the tail. Terminal males are larger and more robust, exhibiting reddish to lavender hues with blue-green spots and dark vertical bands.
Biology & Behavior
This species is a protogynous hermaphrodite, meaning individuals begin life as females and can transition into males as they grow. They are generally solitary and somewhat shy, often avoiding direct contact. When threatened or preparing to sleep, they exhibit a unique behavior of burying themselves into sandy substrates, while larger adults may also seek shelter in rock crevices.
Feeding
As a carnivore, the Queen coris primarily hunts for hard-shelled prey. Its diet consists largely of crustaceans, mollusks, and sea urchins, which it consumes with notable dexterity.
Distribution
Based on iNaturalist community observations