North Pacific lightfish (Maurolicus japonicus), first described by Ishikawa, 1915 is a small fish in the family Sternoptychidae (order Stomiiformes). Adults typically reach 5.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 50 to 400 metres. It occurs in Deep-water waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Least Concern.
Dorsal soft rays (total): 10 - 11; Anal soft rays: 21 - 24; Vertebrae: 32 - 34.
Behavioural data for North Pacific lightfish is currently being reviewed.
Marine; bathypelagic; depth range 50 - 400 m . Deep-water Northwest Pacific: Toyama Bay, Pacific coast of Honshu southward to adjacent waters of Ryukyu Islands and Ogasawara Islands in Japan.
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