found from as far north as Greenland and Iceland south to Brazil in the western Atlantic and South Africa in the eastern Atlantic. In the Indo-Pacific it is found from South Africa east to Japan, Australia, and New Zealand. It has also been reported off the coasts of Argentina and Hawaii. It is likely more common in the western Pacific than records indicate due to lack of fishing in its depth range in the region. With an extensive depth range below the surface, the alfonsino occurs in localized aggregations over deep-sea coral habitats on the continental shelf and continental slope. By day it stays in deeper water and vertically migrates to shallower waters at night. It is most commonly found deep in waters around in temperature, however depth range varies by region. In the eastern Atlantic its depth range is , while in the western Atlantic its depth range is , common depth range . Its depth range is largest in the Indo-Pacific, where it is found as deep as in the waters off of Australia, New Zealand, New Caledonia, La Reunion Island, Mauritius, Madagascar, Comoros, Seychelles, Korea, Japan, New Guinea, the Ryukyu Islands, and Hawaii. Biology and ecology The splendid alfonsino is the far more studied species of Beryx, but the alfonsino's biology is very similar to that of its congener. Alfonsinos are benthopelagic and aggregate over deep-ocean seamounts, typically near deep-sea corals. At night, they migrate vertically into shallower waters. Their primary food sources are crustaceans, cephalopods, and small fish, with the last being the most abundant prey in its diet. In this it is quite dissimilar from the splendid alfonsino, which appears to have a slower digestion and wider dietary breadth. Spawning occurs in the summer months, June through September, though males can reproduce year-round. Alfonsinos are batch spawners, that is they release eggs multiple times over an extended spawning season rather in a short period. Eggs and larvae are epipelagic, staying near the ocean's surface. Eggs hatch after around 27 hours and larvae are initially SL in size, identifiable by pigment near the brain. Flexion, when the larva bends upwards prior to development of the caudal fin, occurs at SL. Fin rays and scales are fully formed by SL. They are distinguished by elongated pelvic rays and anterior dorsal spines as well as pigment near the gas bladder, though they are very similar to the larvae