Known from Isla de Malpelo. Tagging showed the species swim between 20 and 2000 m depth, with most of their time spent below 1000 m. Further, this species is present at a specific location in the north of the island year round: from January to April, during the day and night when it is cold (below 16°C) and thermocline is shallow (less than 20 m); and from May to December, almost exclusively at night when the water is warm (Sandra Bessudo, Fundación Malpelo), pers. comm. 05/2003; 06/2009).