Easter Island Grouper

Epinephelus cifuentesi

The Easter Island grouper (Epinephelus cifuentesi) is a large serranid fish reaching up to 90 cm in length, endemic to the remote waters of Easter Island (Rapa Nui) and nearby Sala y Gomez in the southeastern Pacific. It has a robust, typical grouper body shape with a dark brownish to olive coloration marked with faint darker spots and blotches. The species inhabits rocky reefs and caves around these volcanic islands, typically at depths between 10 and 60 meters. Like other groupers, it is a protogynous hermaphrodite, starting life as female and potentially transitioning to male at larger sizes. It feeds on fish, crustaceans, and cephalopods, using its large mouth to create a suction force that inhales prey whole. Due to the extreme isolation of its habitat, this species is encountered by relatively few divers, making it a prized sighting for those who travel to Easter Island. The remote location has provided some natural protection from commercial fishing pressure, though the species remains vulnerable due to its limited range and slow reproductive rate.