The top alfonsinos (Beryx splendens) are deep-sea fish known for their bright red coloration and firm, white flesh, making them a prized catch in international seafood markets. These species inhabit deep continental slopes and seamounts, typically at depths between 200 and 1,200 meters. The main countries engaged in the commercial harvest of top alfonsinos and related species (often grouped as "Alfonsinos, etc. not elsewhere included") include Japan, Spain, Portugal, New Zealand, and Morocco. These nations operate specialized deep-sea trawl and longline fisheries, targeting alfonsinos for both domestic consumption and export. The fishing industry for alfonsinos is relatively small compared to more common commercial species, but it is significant for certain coastal communities and high-end markets, particularly in Japan and Southern Europe, where the fish is highly valued for sushi and gourmet dishes. Due to their slow growth and late maturity, alfonsino populations are vulnerable to overfishing, prompting international efforts to manage and monitor catches through organizations such as the North East Atlantic Fisheries Commission (NEAFC) and the South Pacific Regional Fisheries Management Organisation (SPRFMO).
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Data from FAO. 2025. Global Capture Production. In: Fisheries and Aquaculture.