Moorish Idol

How it lives

Adults live on reef flats, in lagoons and on rocky and coral reefs, usually in groups of 2 or 3 and now and then in large schools. They feed on small animals that grow on the reef. Its young drift in the open ocean for a long time before they settle, which scientists believe explains why its range is so wide. It is a popular aquarium fish, but it rarely survives in a tank.

Where it normally lives

Tropical Indian and Pacific oceans; in the eastern Pacific from Bahía Almejas, southern Baja California, to Peru, including Easter Island and the Galapagos.

The Moorish idol lives across the tropical Indian and Pacific oceans, from East Africa to southern Japan and the Hawaiian Islands. In the eastern Pacific its range runs from Bahía Almejas, on the Pacific side of southern Baja California, south to Peru, with records at Easter Island and the Galapagos. Catalina Island is more than 700 miles north of Bahía Almejas in a straight line. It lives from the surface to about 600 feet.

Range source: Love and colleagues, 2021 checklist of Pacific coast fishes · Mexican Fish.com · FishBase

In California

On November 10, 2026, Melia Totten, a diver who posts on Instagram as @melia_mountain_mermaid, filmed a Moorish idol at Catalina Island. The fish swam under a rock ledge, over sand between boulders. Ben Frable, who manages the Marine Vertebrate Collection at Scripps Institution of Oceanography, confirmed the ID.

The 2021 checklist of Pacific coast fishes by Milton Love and colleagues has no California record of the species. Every Moorish idol logged on iNaturalist in California before this one was in an aquarium or had a location other users flagged as wrong.