Diaphus dumerilii (Bleeker, 1856)
Dumeril's lanternfish
Diaphus dumerilii
photo by JAMARC

Family:  Myctophidae (Lanternfishes), subfamily: Diaphinae
Max. size:  9.5 cm TL (male/unsexed); max. reported age: 1 years
Environment:  pelagic-oceanic; marine; depth range 0 - 805 m, oceanodromous
Distribution:  Eastern Atlantic: Canary Islands (Ref. 6808), 20°N (inshore from 29°N) to about 10°S west of 0°, with disjunct distribution between 14°N and 8°N, but to 23°S east of 0°. Isolates north to off south-west Ireland (Ref. 4775). Western Atlantic: tropical areas but with expatriate extensions to 51°N and 45°S in western boundary currents [(apparently absent over a minimum region off Brazil) according to Ref. 4479 or 4775] (Ref. 4479, 4775). Very rare or absent in the Indo-Pacific. Tropical Indian and Atlantic; east coast of South America (Ref. 47377).
Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 14-15; Anal spines: 0-0; Anal soft rays: 14-15
Biology:  High-oceanic and mesopelagic populations are found between 225-750 m during the day (maximum abundance at 450-500 m) and is nyctoepipelagic at surface down to 125 m at night (Ref. 4479). Pseudoceanic and pelagic populations are found in the upper 50 m at night (Ref. 4066). Feeding is acyclic in northwest Africa (Ref. 9198).
IUCN Red List Status: Data deficient (DD); Date assessed: 10 July 2012 Ref. (130435)
Threat to humans:  harmless
Country info:   
 


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