Argyropelecus olfersii (Cuvier, 1829)
photo by Dolgov, A.

Family:  Sternoptychidae (Marine hatchetfishes), subfamily: Sternoptychinae
Max. size:  9 cm TL (male/unsexed)
Environment:  bathypelagic; depth range 100 - 800 m, oceanodromous
Distribution:  Eastern Atlantic: southern Iceland to Canary Islands and Cape of Good Hope, South Africa. South Pacific: between 30°S and 50°S.
Diagnosis:  Lower opercular spine downward and curved forward. Upper opercular spine short, directed outward. Ventral line of abdominal keel usually with a concave notch in front of anterior postabdominal spine (Ref. 37473).
Biology:  Oceanic, mesopelagic with adults and juveniles at 200-800 m by day and 100 (sometimes shallower)-600 m by night, pre-metamorphic larvae at 100-300 m. Adults and juveniles make short diel vertical migrations. Dioecious, adult photophore complement acquired at about 16-17 mm SL (Ref. 4739). Feeds on crustaceans and small fishes (Ref. 35388).
IUCN Red List Status: Least Concern (LC); Date assessed: 09 October 2018 Ref. (123251)
Threat to humans:  harmless
Country info:   

Entered by: Luna, Susan M. - 18.02.92
Modified by: Torres, Armi G. - 28.08.03
Checked by: Agustin, Liza Q. - 05.07.94

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 Not for publication.

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