Éric CluaSandra BessudoJE CaselleC. ChauvetChristian H. JostAM Friedlander2026-03-222026-03-22201910.3354/esr00947https://doi.org/10.3354/esr00947https://andeanlibrary.org/handle/123456789/52687Citaciones: 2We provide the first assessment for a coral reef fish population of a potentially threatened endemic species from a remote and isolated oceanic island. Based on a 3-dimensional (3D) numerical field model of the reef habitat and underwater visual censuses conducted by 2 different teams in February and May 2016, we show that the 3.7 km 2 of the Clipperton Atoll reefs shallower than 30 m host > 50 000 ind. (average density of 0.02 ind. m -2 ) of the endemic Clipperton angelfish Holacanthus limbaughi. Based on limited submersible observations to 150 m, the population likely extends below the 30 m depth stratum, resulting in an even larger population size and providing a potential depth refuge against expected warming ocean temperatures.enAtollGeographyPopulationFisheryarticle