Maurolicus muelleri (Gmelin, 1789)
Silvery lightfish
photo by Svensen, E.

Family:  Sternoptychidae (Marine hatchetfishes), subfamily: Maurolicinae
Max. size:  8 cm TL (male/unsexed); max. reported age: 3 years
Environment:  bathypelagic; depth range 271 - 1524 m
Distribution:  Sub-Arctic, and sub-Antarctic waters of the Pacific and Atlantic oceans and the Mediterranean Sea. Eastern Atlantic:: from Iceland and Norway to Senegal and from Democratic Republic of the Congo to Namibia. In tropical and subtropical waters.
Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 9-11; Anal spines: 0-0; Anal soft rays: 19-24. Silvery with a greenish-blue back (Ref. 4054).
Biology:  Oceanic, found to depths of at least 1,524 m. Migrate in the water column at depths of 150-250 m during the day and to about 50 m at night (Ref. 57912, 107678). Mesopelagic (Ref. 5951); abundant near continental shelf-slope breaks and seamounts, rare in the open ocean (Ref. 107678). A cyclic selective feeder of copepods and euphausiids (Ref. 4739). They become sexually mature when 1 year old. Spawning takes place in March - September, producing 200-500 eggs, floating on the surface (Ref. 35388). Lipid content is 5.5 % in fresh body weight and wax ester is 15.3 % in total lipids (Ref. 8966).
IUCN Red List Status: Least Concern (LC); Date assessed: 09 October 2018 Ref. (120744)
Threat to humans:  harmless
Country info:   

Entered by: Froese, Rainer - 17.10.90
Modified by: Capuli, Estelita Emily - 19.05.17
Checked by: Capuli, Estelita Emily - 19.05.17

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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