 Traditionally, it has comprised a part of the bycatch of pelagic longline fisheries targeting swordfish ("Xiphius gladius") and tuna in the western Atlantic.Since 1991, it has also been the focus of a longline fishery operating over seamounts off northeastern Brazil, where large numbers of sharks congregate and are easily captured.Some 90% of the seamount shark and ray catch in this area now consists of night sharks; of those, about 89% are juveniles.