Feeding Behavior of a Vertically Migrating Lanternfish

Abstract

Selective fishing of the deep scattering layer, defined by echosounder recordings, with an automatic opening and closing trawl has helped to define the diurnal vertical migration and feeding behavior of Lampanyctus mexicanus, a lanternfish of the family Myctophidae. The feeding behavior, expressed as a per cent nutrition, is thought to be affected by food available at the surface and by the decrease of oxygen content of the water at the deepest range of the vertical migration of the fish.