High-oceanic, mesopelagic species, found at 650-1,000 m during daytime, at 40-278 during the night (maximum abundance at 100 m at night) . Feeds on amphipods, calanoid copepods, conchoecid ostracods, and euphausiid larvae and adults . There are larger specimens reported for this species (11 cm by Gibbs et al. (1972) and 12.8 cm from the southwest Atlantic by Parin et al. (1974)) but these may be misidentifications .
Dorsal spines (total): 0; Dorsal soft rays (total): 16 - 19; Anal spines: 0; Anal soft rays: 17 - 20; Vertebrae: 32 - 34. 10-11 AO photophores; 8-10 tooth patches on the lower limb of the second gill arch; 32-33 lateral line organs . Pectoral fin rays rather weak, flexible .
Behavioural data for Lampanyctus Cuprarius is currently being reviewed.
Marine; bathypelagic; oceanodromous ; depth range 40 - 1000 m , usually 100 - ? m . Deep-water; 41°N - 35°S Atlantic Ocean: bipolar in subtropical waters.
amphipods, calanoid copepods, conchoecid ostracods, and euphausiid larvae and adults (Ref
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